I was reading on a repair log about using a basic "soda" bath to soak a module similar to the HB-41 from a Raiden board to remove the black material. However I am not familiar with this technique. How would I make this solution ? I know Caius makes repro HB-41 boards, and I may grab one, but I want to try this first. Any help would be appreciated.
- Thread starter Black IcE
- Start date
I'd just get a replacement from Caius. His repros are fantastic.
I had the opportunity to test his HB-45A module for Raiden DX. It's a perfect repro-replacement.
http://www.jammarcade.net/seibu-hb-45a-reproduction/
I highly recommend getting his HB-41 for your Raiden, save yourself the hassle.
VectorGlow
Student
It's only paint, so a paint stripper of some type. However, some can be pretty harsh on both the board and your fingers, eyes, etc (if you're not careful).Intersted as well, need to recap a Konami module from my Xmen
I've used this on the Konami hybrid sound modules:
https://www.ebay.co.uk/itm/Expo-Modellers-PAINT-REMOVER-STRIPPER-50mls-bottle-44500/183273855919
it does a pretty good job and doesn't cause any issues (to the board or you) that I've noticed.
It's still a messy process though and you need to be careful when cleaning it off - use a soft plastic spatula or similar and avoid damaging the tracks, printed resistors, and so on.
VectorGlow
Student
Haven't heard of the soda bath solution but would love to know more - the HB-41 module (and many others) use a potting compound/resin which is a real sod to remove. A paint stripper just won't do the job.
Thanks @VectorGlow!
So you left the chip on the board? I actually plan to remove it first to make it a bit easier doing it.
Will see how it goes when I get time for it
So you left the chip on the board? I actually plan to remove it first to make it a bit easier doing it.
Will see how it goes when I get time for it
VectorGlow
Student
There's two surface mounted chips on the Konami hybrid sound modules, both are on the underside of the module. Yup, I left them in place, I only applied the paint remover that I linked to once I had removed the caps from the top side.Thanks @VectorGlow!
So you left the chip on the board? I actually plan to remove it first to make it a bit easier doing it.
Will see how it goes when I get time for it
Having said that, there's no reason to strip the pain from the underside of the module unless it's already peeling, there's damage from leaky caps, etc.
A
Apocalypse
I've posted the soda bath method in this thread:
Capcom 85H001 (sound module) reproduction
Also you MUST remove the module completely for a recap as electrolytic fluid from the capacitors has to been cleaned on both side. Even if the sound is brought back to life with new caps the fluid will continue to eat the traces underneath.
Capcom 85H001 (sound module) reproduction
Also you MUST remove the module completely for a recap as electrolytic fluid from the capacitors has to been cleaned on both side. Even if the sound is brought back to life with new caps the fluid will continue to eat the traces underneath.
Thanks, but I think your images are broken?
VectorGlow
Student
Check out his blog page:
http://arcadefixer.blogspot.com/2018/02/capcom-85h001-sound-module-reproduction.html
VectorGlow
Student
Update: I tried Mr Muscle on a Taito TC0070RGB module (one of these: http://www.macros-arcade.com/images/TC0070-Real.jpg (not my pic)) but no luck I'm afraid. What type of material are these encased in? Some kind of hard epoxy?
A
Apocalypse
By the look of it I would say it's not ceramic based but rather a kind of resin.
VectorGlow
Student
Thanks. Any ideas what could dissolve it without harming the components, PCB or tracks? ?
A
Apocalypse
Without harming the components? No...Thanks. Any ideas what could dissolve it without harming the components, PCB or tracks? ?
If it's the material I think of it should be softish, what I do is I cut 3 sides with a sharp blade then heat the thing up with hot air. This way you should be able to peel the coating but no guarantee you won't damage anything in the process.
VectorGlow
Student
Thanks, I'll experiment with your suggestion on a broken old custom chip.
