Corvette
Bally, 1994Having issues with my Bally’s corvette. Out of nowhere my F111 blew. Replaced it and it blew again. Looking on line seems like the main cause for this fuse blowing is when something is misconnected. I did not change anything. I am trying to follow the schematics. But they are hard to follow. Looking for some guidance. Also the motor and the racetrack quit working. That’s what got me looking.
The PCB's (circuit boards) on the pages 3-23 to 3-27 are the ones that use the 20Volt flasherpower, so if something is wrong on on of these boards, it could blow fuse F111
Quoted from chrismoore701:Isn’t it BR3?
Nope, BR3 is the 50V rectifier, Br4 is for 20Volt and fused by F111
https://pinside.com/pinball/forum/topic/black-rose-flashers-18-20#post-2604414
When you use the methode with the probes on J102, then the fuse must be placed in the fuseholder.
Without a fuse in place, you can put the probe on the left clip of the fuseholder where the probe was on position (3+4) in the animation.
Can i just through any fuse in there to create an electrical path? Just for the test with no power? I blew my fuse and don’t have a new one yet
Just got back in town. Here are my measurements. Something is wrong
Red to 1 black to tp7 425. Number slowly increases to 425
Red to 3 black to tp7 521
Black to 1 red to tp5 dead short
Black to 3 red to tp5 543
Thoughts?
Thanks
BR4 is correct.
Your readings are showing the problem. BR4 is shorted.
It's a fairly easy repair to make, but if you don't have PCB repair experience, send it to a pro. Perhaps send your MPU along with it for an NVRAM install. I can take care of all of that if you'd like. LMK. See contact info below.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
It’s just a matter of desoldering BR4 and replacing it correct? I have done that with plugs and chips. So i have no problem doing that.
Thanks
Quoted from chrismoore701:It’s just a matter of desoldering BR4 and replacing it correct?
Yes. It's easier to cut the bridge off the board, then remove each leg individually and suck the holes clean.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Fixed. My question for you guys. How am i supposed to find this out without you? Is there some sort of secret Pinball repair manual?
Thanks guys
Quoted from chrismoore701:My question for you guys. How am i supposed to find this out without you?
You learn as you go.
There is Pinwiki : http://www.pinwiki.com/wiki/index.php?title=Main_Page
Basic electronic searches. And Youtube has lots of short how to videos.
And asking here. You'll pick things up pretty fast. And someday be able to help others.
LTG : )
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