Hakko FX-888 None Digital Micro controller - Page 1
Forum section: electronics / repair

author: sampler1
author_rank: Regular Contributor
timestamp: March 29, 2020, 01:28:05 am
content: Hi Hi,I hope everyone is staying safe.I have two OEM Hakko FX-888 (none digital ) units.. I suspect both have burned micro controllers on the control boards.. The chip says Hakko on it but I suspect there is a replacement part.. Can anyone shed a bit of insight on this and how I can go about repairing the units I have..I have contacted Hakko USA and they have no parts and will not supply any info.. Shame on Hakko!ANYONE??Best regards, great time to keep busy in the shop, stay at home and lets get rid of Covid19Garry

author: wraper
author_rank: Unknown
timestamp: March 29, 2020, 01:37:51 am
content: There is no replacement as it's custom part and it's not likely it's faulty to begin with. If it's dead the only thing you can do is replace the whole board.

author: sampler1
author_rank: Regular Contributor
timestamp: March 29, 2020, 01:46:41 am
content: The board is not available and one of the chips has a burn mark in the center.. The way I figure it the chinese have found a way to make a perfect copy so if they can reverse engineer the chip. Its replaceable.Thanks Anyhow..too easy to give up.Check out what dave says on youtube ;EEVblog #242 - Hakko FX-888 Soldering Iron HackRegards

author: wraper
author_rank: Unknown
timestamp: March 29, 2020, 02:26:34 am
content: If it's burned, probably there is more to it than only faulty IC itself. Chinese don't make this chip, there is zero incentive to do so. They make counterfeit stations with board based on op amp.BTW I don't see any burn mark on your photo. Are you sure it's not simply flux residues?

author: sampler1
author_rank: Regular Contributor
timestamp: March 29, 2020, 04:07:40 am
content: The Photo is from the EEVblog, not mine. As far as the Chinese , yes they are using an Atmel.Anyone else with some insight?Below is the digital version of the FX-888D, the MCU is a 24 pin . I think they used the same supplier but a 20pin. Maybe the Renesas RL78/G12 MCU Take a peek at the photo.Easy enough to read one if its not locked.Regards

author: Rasz
author_rank: Super Contributor
timestamp: March 29, 2020, 07:16:37 am
content: desolder the chip, shove arduino inside, splice into appropriate padsafaik original hakko 888 use thermistor? so no need for thermocouple interfacing (opamp/dedicated chips/cold junction compensation/etc)even better idea, sell as broken, buy yourself cheap chinese T12 clone station

author: amyk
author_rank: Super Contributor
timestamp: March 29, 2020, 09:15:47 pm
content: The FX-888 is a pure analog controller, like the 936; AFAIK it doesn't have a microcontroller --- all the (few) pictures I could find show it has an LM358 and a LM324.(Google is an absolute piece of shit! I'm looking for FX-888 ---notthe FX-888D PCB photos, and it gives me a bunch of the latter!)

author: wraper
author_rank: Unknown
timestamp: March 29, 2020, 09:19:53 pm
content: Quote from: amyk on March 29, 2020, 09:15:47 pmThen on those photos was 100% counterfeit.

author: sampler1
author_rank: Regular Contributor
timestamp: March 29, 2020, 09:46:32 pm
content: Please find another post to comment on as it is obvious you know very little.. You have added photos that have nothing to do with this post and information that has no use..IC2 in my photo is a microcontroller.. Please move on to another post with your bad language and useless negative comments..My apologies to the other users.

author: wraper
author_rank: Unknown
timestamp: March 29, 2020, 09:56:59 pm
content: Quote from: sampler1 on March 29, 2020, 09:46:32 pmMy apologies for your lack of comprehension. I posted photos of controller from counterfeit Hakko 888 so you could see why there is no incentive to make clone of Hakko chip. If it's hard to understand, I'm sorry. But you have zero chance of sourcing this custom IC. Keep stupidly theorizing why Chinese must have made a clone of it. What positive comments did you expect? Supporting the idea that there must be a clone chip somewhere and suggestion to keep hoping you'll find it one day?

author: wraper
author_rank: Unknown
timestamp: March 29, 2020, 11:04:34 pm
content: To fix it you would need to source knockoff board for 888 but it seems they are no longer available in favor of knockoff 888D. So it seems you will need to build your own controller board or hack something like this into ithttps://www.ebay.co.uk/itm/For-HAKKO-936-Soldering-Iron-Station-Controller-Thermostat-Control-Board-A1321-/131683154897Just need to be sure that it's made for correct temperature sensor. As some use thermocouple but other thermistor.

author: wraper
author_rank: Unknown
timestamp: March 29, 2020, 11:13:25 pm
content: I stand corrected, seems you can still buy themhttps://www.yoycart.com/Product/545850664710/Again you need to be aware it might be made for different type of sensor.

author: sampler1
author_rank: Regular Contributor
timestamp: March 30, 2020, 12:32:52 am
content: I hope this can help someone. I found a control board for the FX888 none Digital model on Aliexpress.https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20200329163111&SearchText=FX888Regards to the EEVBlogStay well!

author: Rasz
author_rank: Super Contributor
timestamp: March 30, 2020, 01:26:31 am
content: Quote from: sampler1 on March 30, 2020, 12:32:52 amyes, you "found" the garbage wraper posted as a screenshot right after "They make counterfeit stations with board based on op amp" comment, the same one you didnt understand

author: LancelotM
author_rank: Newbie
timestamp: June 04, 2020, 06:44:16 pm
content: Quote from: sampler1 on March 29, 2020, 01:28:05 amThey can't supply any info cause yours isn't even a real Hakko station