(Topic ID: 161096)

Funhouse cpu repair or new?


By billsfanmd

2 years ago



Topic Stats

  • 28 posts
  • 16 Pinsiders participating
  • Latest reply 2 years ago by billsfanmd
  • Topic is favorited by 2 Pinsiders

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batteries_(resized).jpg
Duracell_(resized).jpg
image_(resized).jpeg
image_(resized).jpeg

#1 2 years ago

Working on a friends funhouse he picked up with acid damage. See a few on eBay new for $150. Repair old or get new? Says I need to move game roms
Over. Easy to move that large ASIC chip over? Any help would be appreciated

#2 2 years ago

Depending on your soldering skills plus amount of damage, replacement may be the way to go...pics would help.

#3 2 years ago

Pix please.

#4 2 years ago

image_(resized).jpeg

image_(resized).jpeg

#5 2 years ago

That will be a sizable project and require good soldering skills since alkaline damaged traces and pads lift very easily. It's definitely not a help a friend type of project.

https://pinside.com/pinball/forum/topic/terrybs-guide-to-repairing-alkaline-battery-damage

#6 2 years ago

Thx. Anyone have a cpu for sale Lmk.

#7 2 years ago

Mine was about that bad and was deemed un-repairable by a professional.

Rottondog has new replacement boards (MPU089) around 175.

http://rottendog.us/MPU089.html

I see Curly @ little shop of games has some in stock. He is a good guy to work with. Might also try ebay.

http://littleshopofgames.com/product/williams-wpc89-mpu-board-mpu089/

#8 2 years ago

Before you do anything get Duracell to pay for it. Mine was just as bad and Rob fixed it good as new.

#9 2 years ago

Yeah Duracell seems to leak a lot

#10 2 years ago

Gere is a proof of Duracell quality. It is not 2017 yet ...

Duracell_(resized).jpg

#11 2 years ago

wow..what is the best battery for pins?

#12 2 years ago
Quoted from billsfanmd:

wow..what is the best battery for pins?

None.

anyPin NVRAM Battery Eliminator
www.LockWhenLit.com/anyPin.htm

--
Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com

#13 2 years ago
Quoted from Borygard:

None.
anyPin NVRAM Battery Eliminator
http://www.LockWhenLit.com/anyPin.htm
--
Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com

I set that up for you Rob

#14 2 years ago
Quoted from billsfanmd:

wow..what is the best battery for pins?

batteries_(resized).jpg

-1
#15 2 years ago

Really not worth the time in repairing. Acid never stops. A new replacement is not that expensive. Just tell Ken not to cheap out and fix it right.

#16 2 years ago
Quoted from windsoreight:

Really not worth the time in repairing. Acid never stops. A new replacement is not that expensive. Just tell Ken not to cheap out and fix it right.

yep he ordered new board

#17 2 years ago
Quoted from billsfanmd:

Easy to move that large ASIC chip over? Any help would be appreciated

You will want to pick up an PLCC extraction tool.

#18 2 years ago
Quoted from Pin_Guy:

You will want to pick up an PLCC extraction tool.

Thanks. Any help moving that chip let me know. Tool link ?

#20 2 years ago

Thanks bigd....is there a video on how to use this...dont want to screw it up.

#21 2 years ago

#22 2 years ago

Nice. I did it very carefully with a small tool. Went perfect

#23 2 years ago

I'd try repairing it first... If that doesnt work out, you can always replace it

1 week later
#24 2 years ago
Quoted from windsoreight:

Really not worth the time in repairing. Acid never stops. A new replacement is not that expensive. Just tell Ken not to cheap out and fix it right.

Say what???? Is that how you see the hobby? You must nutralize the acid (technically it's a base, not an acid) with vinegar and give it a good scrub. I usually let it stay for an hour or so and wash it of with some alcohol.

Then all the affected parts will be desoldered and thrown away. After that the board will be sanded down and the parts can be replaced after a first optical check. Then comes the moment of thruth, the test. Wirebridges will be added and as last a silicium battery.

Check: http://www.flippergast.nl/?p=175

#25 2 years ago

Board is actually in nice shape. Considering the acid and everything Selling for $65

#26 2 years ago
Quoted from HarrieD:

Say what???? Is that how you see the hobby? You must nutralize the acid (technically it's a base, not an acid) with vinegar and give it a good scrub. I usually let it stay for an hour or so and wash it of with some alcohol.
Then all the affected parts will be desoldered and thrown away. After that the board will be sanded down and the parts can be replaced after a first optical check. Then comes the moment of thruth, the test. Wirebridges will be added and as last a silicium battery.
Check: http://www.flippergast.nl/?p=175

You left out one important step - sealing the board once the repair is done. That will greatly increase the odds of the alkaline damage not returning.

But still, not all are repairable. If you're a hobbyist and your time costs you nothing, the parts for the repair are certainly not expensive. But, if you're doing rework for hire, the amount of time one of these repairs take is the limiting factor.

It's usually worse than the pics make it out to be, and that one looks kinda iffy already.

I wouldn't throw the old board away - someone on eBay will buy it and have a good time fixing it - but I don't think it's gonna be cost effective to repair professionally.

#27 2 years ago

Vote for new board here, but keep the old one.

If you can get it working eventually, you could sell it to recoup some of the cost. But in my experience, when you see that much green on the component leads, it isn't worth the effort. It might work for a year, then crap out on you again. Alkaline damaged boards are boomerangs.

#28 2 years ago

I have a guy intersted when I send better pics. I think board will clean up nice but not really an expert on acid

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