yashsingh1/xdaforums huggingface dataset:
[MTCB Hardware Development] oskaratk:
The resolder was really easy.

Granted, I do electronics soldering for 50 years now and have a SMD rework station, hot air gun and a stereo microscope. But had never done a BGA before

What you really need is:

PCB holder of some kind

small hot air gun - not the 2000W burner :)

tweezers

sticky flux

solder wick

solder station

artist paintbrush

magnifying glass

- I also used some alcohol wipes

(optional: heart rate monitor)

Oskar
[MTCB Hardware Development] typos1:
Yes its seems so easy when you think about it . . . but still undecided if I m gonna do mine or pay someone else to . . .
[MTCB Hardware Development] Mucho79:
-15E

-125I

-125

Those chips are working

Gesendet von meinem SM-T705 mit Tapatalk
[MTCB Hardware Development] marchnz:
Agree, it's great to hear DIY success stories without the professional rework equipment, from what I understand I would take additional steps to ensure the endurance such as hot glue around the devices as a measure against joint fractures.

Great result. I have scheduled professional expertise for hopefully next week on my MTCD SOM.

---------- Post added at 09:28 PM ---------- Previous post was at 09:14 PM ----------

Yes anything over 1066M is supported...all IM chips.

From the manufacturer spec sheet those three digits correspond to timing

15E = DDR3-1333 CL9-9-9

125 = DDR3-1600 CL13-13-13

To clarify, DDR3 1.5v SDRAM 1066 or greater, including DDR3L (1.35v) is supported. Also note that the RK3188 can be configured for DDR3L 1.35v but is not necessary - as you have experienced.
[MTCB Hardware Development] oskaratk:
has some disadvantage, imho. In case you need to remove the chip for repair its hard to get all the sticky off and I would be afraid starting a fire on the PCB when I heat it up with an airgun

Oskar
[MTCB Hardware Development] nuovagrafica:
finally I found a company at 150 km that can do the job for me, they have Ersa 550 PL and they asked me 3days and 100,00€ without no warranty

before they want the datasheet of IM8G16D3EBBG-125I the link here is dead

they nees also the datasheet of MTC_Rk3188 rev0.2 but the link here is rev0.1 please can you give me the correct link for download both datasheet?

Ok I solved thank you
[MTCB Hardware Development] typos1:
Theres no data sheet for the SoM, the RAM data link should also be in [MENTION=6041319]dsa8310[/MENTION]'s "October/September Firmware . . " thread. Cant see why they need either really.
[MTCB Hardware Development] jonsfield:
... And the 1st upgrade to 2gb in South Africa is complete!

It cost me a total of USD50 for the 2x1gb modules($18 each) , shipping($15) and professional installation($8).

Below are before and after pics.

I'm not entirely convinced of performance improvement, I'm using Deezer and TomTom on Malaysk Rom 4.4.4.

I'm going to try a few other roms, probably even 5.1 to see how it runs.

Once I'm happy I'll do my wife's unit.
[MTCB Hardware Development] trvbone:
So I have Xtrons PF85mtva unit mtcd will any of these ram chips work for me? Searched most of this thread with not much luck
[MTCB Hardware Development] Oberbergler:
I haven`t found anyone yet, how can change me the RAM-modules. Does anyone know where I can do it in Italy, Austria or Germany?
[MTCB Hardware Development] marchnz:
Have you tried to remove the SOM - from the images it appears socketed unless the module is soldered to header pins/riser and not a socket/pins arrangement? Screws on the SOM suggest removable too.

Worst case, not impossible to remove the module through desoldering.
[MTCB Hardware Development] typos1:
I think you have misunderstood. I do not have a MTCD unit, but I have seen pictures and from memory there is no SoM everything is on the MB.

What pictures are you talking about ? If youre talking about the ones in this thread they are for MTCB/C units which have removable SoMs.
[MTCB Hardware Development] Jaihoidundso:
i'm interested too. From germany.
[MTCB Hardware Development] typos1:
Great, I ll add you to the list.
[MTCB Hardware Development] buccaneerbob:
Yes, I'm definitely interested.
[MTCB Hardware Development] typos1:
Great, Il add you to the list as well.
[MTCB Hardware Development] typos1:
So we have 8 people confirmed so far, shall we wait for 10 everyone ?

[MENTION=6041319]dsa8310[/MENTION] has confirmed that these RAM modules will fit MTCD units, are you in ?
[MTCB Hardware Development] pczao:
I would like too. I'm from Brazil.
[MTCB Hardware Development] typos1:
Great, I ll add you to the list.

Now we re on 9.
[MTCB Hardware Development] marchnz:
Fantastic, had only just found the datasheet for the mtcd K4B4G1646E-BCMA and had a hunch they were the same. If this is the case, absolutely I am in.
[MTCB Hardware Development] typos1:
Great, thats 10 ! What country are you in ?

Right, now we have to decide who is buying [MENTION=6716253]Oberbergler[/MENTION] or myself.

Now we need to get get some accurate postage quotes from the UK and from Italy so people know how much the exact cost will be depending on whether [MENTION=6716253]Oberbergler[/MENTION] or myself orders them.
[MTCB Hardware Development] bsavoir22:
Anyone from the USA getting any? is it as easy as the video shows for swapping the chips?
[MTCB Hardware Development] typos1:
Yes, look at first post. Video ? [MENTION=6041319]dsa8310[/MENTION] has posted full details of how to fit.
[MTCB Hardware Development] Oberbergler:
Postage in Italy costs 9€ so it is cheaper if you order it.
[MTCB Hardware Development] xenodk:
I'll take 2 chips

I'll take 2 chips - From Denmark. Will I be able to install the chips without soldering? I have the same board as shown in the images.
[MTCB Hardware Development] typos1:
Great, but you will DEFINITELY need to solder them, you still in ?
[MTCB Hardware Development] xenodk:
Hoped for plug n´play but will give it a try. Count me in for 2 sets :)
[MTCB Hardware Development] typos1:
Great, "2 sets" ? - this would be 4 RAM modules - 1 "set" = 2 RAM modules (each is 1GB).
[MTCB Hardware Development] xenodk:
Correct 2 X 2GB - Thanks
[MTCB Hardware Development] typos1:
Ok, I will get some accurate prices.
[MTCB Hardware Development] typos1:
You dont have an "Xtroms P85mtva" theres no such thing, Xtrons are a seller only, check your settings/about device screen for the letters after "MTCD" in the MCU field to see what unit you have.

Although thats not relevant here - if you read the thread yourll see that several people have discussed and fitted these RAM modules to MTCD units.
[MTCB Hardware Development] jonsfield:
I found a company to do mine in South Africa by phoning suppliers of BGA rework stations. They gave me local user of their equipment. Maybe that could lead you in the right direction. Or contact local PCB manufacturer.

Good luck.
[MTCB Hardware Development] trvbone:
Please don't belittle me, I know it is MTCD. I ask because I read through this and the other Group Buy thread and one guy said he was the only one that tried this with MTCD unit. It seems like that one didn't work so I was looking for more input.
[MTCB Hardware Development] typos1:
I m not "belittling" you, I m telling you stuff you dont seem to know and I still do not think that you have understood it - I know you know that you have an MTCD unit, but you said it was an "Xtrons MTCD" - I was informing you that Xtrons are a seller only, so there are no "Xtrons" units and telling you to look at your about screen to find out what type of unit you have - I can tell from your pic that its a GS MTCD unit.

But also I said that it wasnt relevant what type of MTCD unit you have cos they all use the same RAM.

I think you must have missed something, cos within this thread its been stated and verified several times that the RAM IS compatible with MTCD units and the guy that had a problem is going to have it re-soldered, I also think that one guy has also had it installed on his MTCD unit.

I m getting the impression you havent read ALL the thread, just some of it. :)
[MTCB Hardware Development] marchnz:
It didnt work for that user because of installation issues or defective RAM not because of the SOM.

I have validated that memory as compatible from a thorough review of the specs and also noting that later revisions of MTCD have the same memory [http://xdaforums.com/showpost.php?p=69753247&postcount=263] K4B4G1646E-BCMA.

My evaluation, from the pics of the install, is that the lower RAM is not properly centered/installed.

Because of this, I asked the poster of that thread to update it clarifying, but hasnt, nor has he updated "monday."

Did you miss my multiple posts on this subject :)

If you're still not convinced, you could always wait until I have my MTCD updated - latest update is end of week.

Here's stage 1:

Note that the heatsink attached to the RK3188 is aftermarket - attached by thermal adhesive...probably not necessary at all......
[MTCB Hardware Development] typos1:
Actually heat can be an issue with the RK3188, so I think that the heatsink is a very good idea, theres a post in one thread about how on MTCB/C units the processor is quite throttled, to about 900Mhz because of worries about heat.
[MTCB Hardware Development] kumarai:
Hello.

I would say that MTCD all good!
[MTCB Hardware Development] Techrev:
I'm curious. For the people who have done this in this thread, is there enough of a performance increase using the RK3188, or should I just optimize my 1GB as best I can until I can get an Octa core in? (I'm not sure if the Indashnet HUs are mature enough yet, or I should wait for the octo cores to reach the other manufacturers, but that's a question for another thread.)
[MTCB Hardware Development] marchnz:
And here we hav it - MTCD Confirmed good in practice - thanks [MENTION=6738895]kumarai[/MENTION]!

[MENTION=6738895]kumarai[/MENTION] - can you tell us how you upgraded, yourself or shop etc and how the unit now performs with 2GB?
[MTCB Hardware Development] jakejm79:
Got mine done today, installation wasn't as cheap as everyone else but it is working flawlessly.

I have noticed some increase in performance (less GUI lagginess, switching apps is better) but I also haven't tested it much.
[MTCB Hardware Development] marchnz:
Did you get this resolved? Note that Kumarai has upgraded MTCD unit OK.
[MTCB Hardware Development] zorantoma:
Hi. I am out of town untill friday. I will post as soon as i get to the shop. Nice for Kumarai.
[MTCB Hardware Development] Jaihoidundso:
Hey,

I looking for something there have a BGA station or can do that for me, but since a many days I don't find anyone. Can anyone explain me PN in german what I need or have to do? A friend can do that, but don't know if his solder is too hot or anything.

Thanks
[MTCB Hardware Development] marchnz:
The lack of posts following users upgrading their units suggests to me that there isnt a significant improvement upgraders were hoping for. I could be wrong of course :)

I wonder if there are android optimizations needed to take advantage of the upgrade - memory management configurables etc?
[MTCB Hardware Development] typos1:
I havent done mine yet, but [MENTION=6041319]dsa8310[/MENTION] and a couple of others said it was faster.
[MTCB Hardware Development] Mucho79:
As I said befor, it is faster, no more lags, maps starts faster, performance is better.
[MTCB Hardware Development] jakejm79:
I didn't notice a huge improvement (but there was a noticeable one) with stock JY 4.4 but once I switched to 5.1 it was a huge improvement, I'm not sure if the switch to 5.1 with 1GB would have yielded any improvement, from what I have read most say its actually worse.
[MTCB Hardware Development] zorantoma:
After 4 atempts(IM(not working) -> original(WORKING)-> IM(not working) ->original working again. They had to reball the ram each time. Maybe i have a faulty ram or a difrent motherboard. I am glad my unit is working again with just 1gb ram. I hope no one else will have such problemss as i did on my GS MTCD rev 0.3.
[MTCB Hardware Development] typos1:
Post some pics of your motherboard and we can check. You deffo have a Rockchip MTCD unit not an Intel ?
[MTCB Hardware Development] marchnz:
update - apparently a "bottom" heater is needed as when they tried to remove the original RAM, they wouldnt lift off. Apparently due to not being able to get enough heat in with the heatgun and needing to heat the board to aid the removal.

Anyone here completed this upgrade detail their experience in how they achieved it?
[MTCB Hardware Development] grandprixfamily:
I have a couple mtcd units headed my way, one will be here Monday. Found this thread. One is an xtrons pf71jjca "branded" but I know that doesn't really mean anything. The other an eonon ga6180f.

I can't access that thread with the directions to solder the chips, but I am very tech savvy and not afraid to try and tackle the job. I wanted a 2gb unit but they were all universal, and many dont truly support dual mode screens (rear roof display for the kids) like the "factory look" units do.

Can anyone get me access to that linked thread? And what are we looking at now for a cost for chips to Nevada USA?
[MTCB Hardware Development] typos1:
You wont be able to tell what manufacturer they are til you get em and see the letter code before the MCU.

Most of the info has been posted here or in [MENTION=6041319]dsa8310[/MENTION]'s "September/October Firmware . . . " thread. No one can read those posts in the thread you mentioned at the moment, not just you.
[MTCB Hardware Development] marchnz:
Dsa repost / quote for members who cannot view OP

Repost for members who cannot view DSA OP
[MENTION=4154117]grandprixfamily[/MENTION] [MENTION=456516]typos1[/MENTION]

Need anything else, let me know with basic description.
[MTCB Hardware Development] typos1:
Thanks for trying to help [MENTION=4974080]marchnz[/MENTION], but those are not the posts we cant view, they are the new posts from the "September/October Firmware . . ." thread I mentioned, the posts we cant view are the original posts from the "Lollipop (and dsa ROM) for MTCB/B Headunits . . " thread that [MENTION=6041319]dsa8310[/MENTION] removed all his posts from.

[MENTION=4203241]Neo[/MENTION] is in the process of re-instating dsa's psots from that thread so we should be able to view them soon. :)
[MTCB Hardware Development] grandprixfamily:
To get me started off on the right path, any recommendations for places to send my board and chips to have it done? I don't mind paying a bit to know it's "right".
[MTCB Hardware Development] jakejm79:
I sent you a PM.
[MTCB Hardware Development] oskaratk:
where are you located?
[MTCB Hardware Development] grandprixfamily:
Reno, NV, USA
[MTCB Hardware Development] dude-nl:
Anyone know someone in the Netherlands who can do the job?
[MTCB Hardware Development] marchnz:
Unfortunately the shop were unsuccessful with the install of the second RAM IC, it hasnt soldered properly and has shorts. As they cannot reball I am now reaching out to suppliers to obtain another 4 - Just incase and I have a second MTCB. [MENTION=456516]typos1[/MENTION] - who was your prefered supplier?

Was hoping to have this sorted by Christmas - not looking to good.

Regards,

Marc
[MTCB Hardware Development] typos1:
IM is the only supplier, some people spoke to the SA dealer and got them quick. Sounds like the shop messed them up . . .
[MTCB Hardware Development] oskaratk:
I have just put in the order for group buy #2 - I can add 4 if you let me know ASAP

http://xdaforums.com/android-auto/mtcb-hardware-development/mtcb-c-d-2gb-ram-buy-2-t3512366

Oskar
[MTCB Hardware Development] marchnz:
That is a very kind offer [MENTION=3571623]oskaratk[/MENTION] - I wouldnt want to hold you up though and Im time deficient as wanting to get done by 24th/Dec. Because of this, direct from the supplier via DHL will probably be my only option at this stage. Thanks again, some really awesome people on this list.
[MTCB Hardware Development] grandprixfamily:
Found out my eonon ga6180f is a mtcc unit. Has the typical buzz noise from the amp too, so it's garbage. Sending it back.

The xtrons turned out to be better looking, and a mtcd.

I gather that the mtcd is better and newer. Seems to do ok now, so I'd bet a ram upgrade will wake it up even more.

I'll just get a set of ram chips and send it in. Any way to buy a spare board so I can have it done while still using my unit, then just swap the new one in?
[MTCB Hardware Development] typos1:
A buzz noise from the amp sounds like a ground loop/earthing problem, its not something that could be described as "typical" in the 3 years I ve had one/been following threads about MTC units. Its probably easily sortable.

You are best off reading the MTCD threads to see if they are "better" than MTCB/C, I ve heard reports that they are not necessarily.

A new board seems a major expense just for a few hours whiles RAM is being fitted, but the best place to try is one of the manufacturers on Alibaba or Aliexpress.
[MTCB Hardware Development] marchnz:
RAM Arrived, visted the shop and took these pictures - you can clearly see on the left RAM IC that the solder balls has shorted.

Will hopefully have a positive update by the end of the week.

For atleast the MTCD unit, the comment from the installer was that they had to get the board hot to remove the module. From his comments, this would suggest the MTCD module is definatley not a DIY.
[MTCB Hardware Development] doctorman:
look at my signature.
[MTCB Hardware Development] nuovagrafica:
ok thank you doctorman, they will do the job on 9 january fingers crossed
[MTCB Hardware Development] shayeight evo:
Like to buy 1 set:cool:
[MTCB Hardware Development] bogomya:
Please include me in this for 1 set if it is still possible

Thanks
[MTCB Hardware Development] TripFlex:
Yes I would be interested as well :)
[MTCB Hardware Development] typos1:
Great, read the thread and contact who is doing the next group buy :)
[MTCB Hardware Development] mouscolo:
iam ready to join, but I need it installed in SoM, as I mentioned before this type of work is very rare here, 3 weeks iam looking for some ppl to do this work without success, if anyone would help me do the all work on quad SoM for me :)
[MTCB Hardware Development] marchnz:
I read it that oskaratk offered to help in the second group buy thread. Sounds like you just need to remove and send the som to him?
[MTCB Hardware Development] mouscolo:
yeah, he is very gentle and being supportive, i did mention to him if he can buy a som or i pay all the costs to him and he do the job, but didnt reply on that, i dont want to make pressure on him and i dont want to look greedy too :)
[MTCB Hardware Development] Ghostling:
alternative dram chip

these IM chips seem to be so difficult to procure. Has anybody looked into swapping to Samsung dram chips?

i was looking at the data sheet for K4B4G1646E and saw that Samsung had a 8Gbit module K4B8G1646Q.

as far as i can tell they are pin compatible with the same timing and supply voltage. best of all they are much easier to find.

edit: nvm. looking closer on the pin layout the samsung and sk hynix chips have a second set of control pins which the IM doesn't.
[MTCB Hardware Development] typos1:
Whats hard about procuring the IM chips ? - you just email IM and buy some, easy.
[MTCB Hardware Development] Ghostling:
so this is still on? thought it was over...
[MTCB Hardware Development] typos1:
To find out what happened just read the thread ! One is over another is ongoing AFAIK and anyone can buy from IM.
[MTCB Hardware Development] typos1:
THIS GROUP BUY HAS FINISHED, ANOTHER IS TAKING PLACE, SEE HERE :

https://xdaforums.com/android-auto/mtcb-hardware-development/mtcb-c-d-2gb-ram-buy-2-t3512366

For questions, answers, impressions after fitting the extra 1GB and general 2GB RAM discussion, please see this thread :

https://xdaforums.com/android-auto/...b-c-2gb-ram-users-thread-impressions-t3533108
[MTCB Hardware Development] ttoton:
Hi guys, I am also interested in buying extra RAM. I have a MTCC-KLD6-V2.97 on Android 5.1.1, 1024x600, an RK3188 Quad-core unit, currently on dsa8310 soft.
[MTCB Hardware Development] typos1:
Great, not read the first post or the post previous to yours then ? :)
[MTCB Hardware Development] ttoton:
Sorry typos1, I replied to wrong thread ;)
[MTCB Hardware Development] nicolapit:
[IMG="soldering"]http://www.emigrantwebtv.com/temp/soldering.jpg[/IMG]

they replaced the ram with ersa 600 but my unit doesn't work, they told me no problem with the alignment but at my home with cheap microscope I shoot that picture. Can I told them that they didn't make the job correctly? if I push power button my unit doesn't boot and I don't have nothing on the display, they told me that if it was a soldering issue at least display must works. What do you think?
[MTCB Hardware Development] dude-nl:
Reset unit...

I had the same, came to life after pressing the power button for 15 seconds...

First I made mistake of reconnecting my flatcable to wrong screen output (10 inch instead if 8 inch).
[MTCB Hardware Development] nuovagrafica:
Did you see the picture? It seems like 2 balls are in touch between them
[MTCB Hardware Development] marchnz:
From the top picture it appears there is a shorted solder ball where soldering process was too hot. This happened to my MTCD unit (manual BGA soldering) and have had to order additional memory.
[MTCB Hardware Development] nicolapit:
at any way I have kept pressed more than 15 second power button but nothing appens
[MTCB Hardware Development] nicolapit:
[IMG="xray"]http://www.emigrantwebtv.com/temp/xray.jpg[/IMG]

today they have made the rework, at the x-ray machine it wasn't possible to see the shorted solder so they have warmed only the ram with the shorted solder without desoldering the ram, the temperatura was setted to 245° and the process took only 35 seconds from 0 to 245° but at the end in the head unit in information about tablet there was only 1024 MB so they have tought to warm the other ram without desoldering but nothing to do, there was again 1024 MB

what do you suggest? is it best to do the reballing or the setting of Ersa was wrong?
[MTCB Hardware Development] deedeebulldog:
What is the reason (if known) for the 2gig limitation? Is it hardware or software. I have 3 units. MTC-C/D and and Intel. I also have a small assortment of SDRAM chips from 512mb to 8gigs. I think I will play around a bit and see what I can get to boot.
[MTCB Hardware Development] typos1:
The manufacturers specs of the RK3188 say it is only compatible with up to 2GB RAM, so I guess its only designed for that.
[MTCB Hardware Development] akslow:
Factory mounted (H5TQ4G63AFR):

https://www.skhynix.com/product/filedata/fileDownload.do?seq=2424

Suggested here (IM8G16D3FBD)

http://www.intelligentmemory.com/fileadmin/pdf-datasheets/IM8G16D3FBDG0.3-0822.pdf

According to parameters this one should work too (MT41K512M16)

https://www.micron.com/~/media/docu.../dram/ddr3/ddr3l_8gb_x16_2cs_twindie_v80a.pdf

and they are available at aliexpress for 12usd/piece with shipping:

https://www.aliexpress.com/item/1PCS-LOT-MT41K512M16TNA-125-E-D9QNS-DDR3-512-16/32759646237.html
[MTCB Hardware Development] typos1:
Theyre 512mb modules.
[MTCB Hardware Development] marchnz:
After approx 3 months, one of the memory modules, or associated connections to, has failed and is reporting 1024MB.

I have given up on upgrading this SOM and instead ordered a factory PX5 2GB unit.

The PX5 2gb works very well and as a bonus upgrade includes an update to Marshmallow - or at least some sort of franken-mello.
[MTCB Hardware Development] mouscolo:
can you share some links with those new usnits?
[MTCB Hardware Development] typos1:
Here are some :

https://xdaforums.com/android-auto/.../to-upgrade-mtcd-rk3188-5-1-1-to-px5-t3581741

https://xdaforums.com/android-auto/...t/dasaita-android-7-1-1-headunit-px3-t3588871

https://xdaforums.com/android-auto/...asaita-mcu-updates-rockchip-px5-octa-t3575155

Most octacore Rockchip headunits on ebay and Aliexpress/Alibaba are MTCD octacore.
[MTCB Hardware Development] jaume2971:
i am MTCB HA 2.73 with android 4.4.4 ?? it s compatible de board px5 2 gb ??

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