Hakko FX888D 23BY 230V hack / mod - Page 1
Forum section: electronics / general

author: scribble
author_rank: Contributor
timestamp: December 06, 2014, 05:54:39 am
content: Hi All,I recently bought the 110v@60Hzv digital version from these guys:http://www.ebay.com/usr/www*bdent*com?_trksid=p2059210.m2749.l2754I have just finished installing this transformerhttp://www.tme.eu/en/details/tts80_z230_24v/toroidal-transformers/breve-tufvassons/which is 24v@3.33A / 80VA (vs the 60VA one that has been sugested by others) and it fits inside the case without issue. Heats up from cold to 450degC in about 30sec and seems to handle large thermal loads without issue.So doing it this way ended up being a lot cheaper than buying the 230V@50Hz version from a local supplier which was around $250NZ (~$200US) for me.

author: xibalban
author_rank: Regular Contributor
timestamp: December 06, 2014, 06:15:42 am
content: Quote from: scribble on December 06, 2014, 05:54:39 amNow, that is a knock-out update. You have not just reinforced my motives to do things the way you've done, but also to nullify all other difficulties that I was being speculative about. Thank you.

author: scribble
author_rank: Contributor
timestamp: December 07, 2014, 02:29:59 am
content: I was a bit worried the transformer wouldn't fit but turned out all good. It fits between the standoffs of the old transformer and fits snuggly between the back of the cover and the small electro cap that sticks out from the front PCB. The toroid is supposedly 87mm diameter and 40mm wide.I do have a question for someone though. There is a zener diode ( I think? it's labeled ZD1) between the 110v phase and neutral with v271u and 33 written on it. I bypassed it when I rewired the PCB for 230V, but assuming it's important and I want to keep all the safety features, what should I replace it with to work on the 230V?

author: SeanB
author_rank: Super Contributor
timestamp: December 07, 2014, 06:07:10 am
content: MOV, 270VAC rated. Just leave it in, it will clamp spikes just as well on 240V as on 120V, though on 120V it was just about useless at clamping typical spikes unless they were really large. Now if it was a 150V unit it likely would break down after a while on 240VAC.

author: scribble
author_rank: Contributor
timestamp: December 07, 2014, 07:04:21 am
content: Ah ok, I did think it was a bit strange but didn't know about ZNR's, only MOV'sFound the datasheet and it says a max allowable ACrms of 175V, so I'll leave it bypassed as the unit will be on a UPS anyway due to the crappy power regulation I have.

author: Jan E L
author_rank: Contributor
timestamp: March 25, 2015, 10:11:54 pm
content: I ordered the same trans. And was happy to see that someone had fitted it beforeFirst time I only found treads using smaller trans with lover VA then the original trans.Had to test for how long the original ZNR would last. And it was about 7sec until the smoke escaped the fuse and the ZNRThe right ZNR to use would be something like Panasonic V391U, v431u or V471U.The original print states 630mA fuse with 220V.I don’t know yet if I want to mount the fuse holder on the back. But I probably end up just have it loose inside. So the cower will be easy to take off.The main switch in mine was rated 250V.Here is my mount:(Not gotten the 220v ZNR and fuse holder yet, so just put the fuse directly on to the switch for now.)The data sheet don't state color on prim/sec sides. But czarny is black in Polish.The plates I bent from alu. And also made sure the upper corners were bent away from the trans so it won’t rub hole in the insulation plastic.https://photos.app.goo.gl/3BmziYnSKapdRZ3v7https://photos.app.goo.gl/TawFcKwWnvc7HxY76Fits like a sharmData sheet ZNR:http://industrial.panasonic.com/lecs/www-data/pdf/AWA0000/AWA0000CE2.pdf

author: David97
author_rank: Contributor
timestamp: April 25, 2018, 08:18:24 am
content: Yet another happy customerFits awesome, runs cold. Been using this shitty converter transformer for about 4 years. Always had the intention to convert it, but finally had enough and ran into this thread. I did the mod tonightI have a MOV on order to replace the old one, so will get onto that ASAP

author: amyk
author_rank: Super Contributor
timestamp: April 25, 2018, 11:19:07 am
content: It fits so well I wonder why Hakko didn't choose a toroidal one originally... perhaps inrush current and cost? Toroidal transformers have much higher inrush current than traditional types.

author: Shock
author_rank: Super Contributor
timestamp: April 25, 2018, 07:02:01 pm
content: Quote from: David97 on April 25, 2018, 08:18:24 amIs that a 3D printed mount for the PCB and transformer? If so awesome job on that.

author: David97
author_rank: Contributor
timestamp: May 02, 2018, 10:53:38 am
content: Quote from: Shock on April 25, 2018, 07:02:01 pmYep, I've just uploaded the STL if anyone else wants to do this conversion.https://www.thingiverse.com/thing:2889458

author: ricepower
author_rank: Newbie
timestamp: September 04, 2018, 08:10:25 am
content: This is cool