Arcade Collecting > Pinball

Dirty Harry Williams 1995

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charliepr:
Hello I have a Dirty Harry Pinball Machine that was given to me, and it needs some fixing. I have no idea how to do this never messed with any pinball machines. The problem I can tell by looking over all the boards is the WPC CPU Security Board Assembly. It had batteries in the holder, looks like for a verryyyyy longggg time. Since all the acid is all over the board and chips it even went all the way up the wires that come out from the holder to the board it self. I tried to turn it on but nothing happens no lights come on, just a ding sound and that's it. If any one can help me with this project i sure could use a lot of help. Don't know if the board can be fixed or if its even the problem. Thanks in advance for any hint, help or suggestions. 

smartbomb2084:
Bad news....

The corroded CPU board is your problem and if it is as bad as you say then it is probably unrepairable and will need replaced.   About $300 if you are lucky

The loud 'bing' you hear when the game is first turned is the Sound Board checking itself and finding itsefl 'OK' by producing only one bing.  This also tells us that the Power driver Board is making +5V  or the Sound Board would not boot either.

Don't be discouraged....depending on the rest of the game's condition it can be worth up to $1200 AS IS.

Not bad for FREE!

ChadTower:

It might be repairable but that's a time consuming effort that will require some knowledge.  Most of the time I just replace everything in the acid damaged area and then start checking every single trace to see if any need repair.  They usually do.

It's a great opportunity to learn here if you're not in a hurry.

smartbomb2084:
Dude, the OP knows squat about pinball and probably has ZERO soldering skills...and you want him to start delsoldering corroded parts from a CPU board,  put in new ones, and check traces to see if they work?

Give us a break.. willya? :dizzy:

charliepr:
OK, this is a start at least some good news about the other boards been OK "probably". I don't know about Pinballs, but I do know about soldering and desoldering. So I should try by finding all the parts that have acid damage and replacing them. One more thing I forgot to say is that all the little red lights on all the boards including the CPU stay lighted, once I turn on the machine. Don't know if they should do that. They machine it self is in very very good condition it is worth trying to repair.. Didn't know it could be worth in that price range thou.

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