Six Million Dollar Man - Minor repair help?

Guru-420

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So, I finally got my Six Million Dollar Man Pinball working again. Fuse replacement, and players 5/6 displays replaced (Someone had put some Stern ones in and they had never worked right before).

While I had the machine apart, I noticed it looked as if there still was a battery installed on the MPU. I know these things like to blow, and I'm suprised mine is still in one piece. I'd like to look at replacing it with a Cap to prevent any blowout from occuring. Anyone be able to help me figure out how to replace the battery and which Cap to use?

More questions to come, but let's start there.. :D
 
Does it look like this? http://i54.tinypic.com/2h83875.jpg

Replace it with something like this: http://freeplayamusements.com/battery1.JPG

Do you get parts from Pinball Resource? (www.pbresource.com) Email them and tell them what you are trying to do. I would recommend using the remote batteries so you are keeping them away from the board. Use some velcro so secure the battery holder in the box.

Does the machine have the original power supply with the small rectifiers (8 Watt I think) or has it been converted to 25 Watt bridge rectifiers?

You ever find any machines on CL in Milwaukee. I see you have a broken Harlem Globetrotters, what's the story on that thing?
 
Thanks for the reply. No, it does not look like the first picture at all, it looks like a bunch of watch batteries in shrink-wrap white plastic. I'll upload a pic tonight when I get home from work. I'd rather not go the route of a remote battery placement, I've had more electronics have batteries blow up in them than I'd care to remember. I'd also go out on a limb and guess the original power supply is still in the machine.

I do keep an eye out on CL for machines, and occasionally some really good deals come along.




The Harlem Globetrotters machine is more of a nightmare than a story. Bought it super cheap at an auction as a possible fixer-upper. Didn't look too close at it before the auction started as I wasn't planning on buying anything, but no one was bidding so I bought it cheap.... Then I got it home...

Basically, it's a glorified boat anchor. So far as I can tell, if I were to try to fix this thing up, it'll wind up costing more than I could ever get out of it. MPU has acid corrosion from a blown battery (so new MPU needed), Solinoid Driver Assy is burned up, all 5 displays need replacement, backglass is a 3/10, needs new lockbar assy (whole thing), new coin door (although the one I have may be salvageable). Even the body and head of the machine are in rough shape.

Only saving grace on this machine is the playfied is beautiful, very little playwear (8-9/10). I'm only about $150 in on the machine, and have been considering parting it out just to cover my losses. Only thing is, I've been a fan of the Harlem Globetrotters for over 30 years, part of me still wants to try to bring the machine back from the dead...
 
No matter what, I would get the batteries offf the board. The rectifiers are 8 Amp not Watt - my bad. Years ago it was recommended to put 25 Amp rectifiers on the power supply board. Gameroom Magazine - years ago.

Email Pinball Resource for the battery holder. Email is better than a phone call and talking to Steve Young.

Keep the Globetrotter for parts. Another will come along.
 
Well... Blew another fuse. 2nd one in as many days. Now I need to order another fuse for a replacement, and still need to figure out what's causing them to blow.

The fuse in question is the F5 fuse off the transformer. I have a spare transformer assembly in the broken Harlem Globetrotters, should I do a swap out and see if that helps? Any other ideas to lead me in the right direction? This fuse handles the lights under the plastics, I'd assume that'd be a nightmare to troubleshoot a random short...
 
Dont do anthing with a transformer! I have yet to have one fail or hear of one that has failed.

I will look up some things tomorrow night.
 
Let's make sure I know exactly where you are at. You are in the bottom right talking about the Rectifier Board. There are 6 fuses with three rectifiers above them and 5 test points on top of the board and you are talking about the 5th fuse from left to right. Correct me if I am wrong. F5 is a 20 Amp, 32V 3AG. According to my Bally Repair book you should have the following at the test points:

TP 1 = 5.4 +/- 0.8 VDC
TP 2 = 230 +/- 27.4 VDC
TP 3 = 11.9 +/- 1.4 VDC
TP 4 = 7.3 +/- 0.9 VAC
TP 5 = 43 +- 5.4 VDC

What are you getting for these reading? Be sure to change your meter to AC for Test Point 4.
 
Haven't gotten to check the TPs yet, and may not even get to it tonight. I do have a really dumb question though, will I be able to test and get an accurate reading with the fuse blown, or will I need to replace the fuse first?
 
I would think it would be there at the test point. It is coming in from the transformer and being rectified before going out. I am not positive on that though. I would think it would be there. Those three bridge rectifiers is what I replaced on my 1978 Lost World years ago. The 8 amp rectifiers can be replaced with 25 Amp rectifiers if needed. FYI there are no dumb questions.
 
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