Hyperball problem

wontwa

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I know, I know...a lot of you don't feel that it's a pin. Neither do I, but since the guts are System 7 - figured I'd ask here. Picked this game up recently, and (supposedly) the only issue was that it wouldn't credit up. Had it plugged in for about 10 minutes - all the playfield lights were in attract mode, scoreboard was on, then at some point all of the playfield lights aside from the outer left perimiter, the energy center, and the digital panel went out (it still tells me to spell things, etc.)

Reseated all of the edge connectors on the control board and the game now credits up and plays "blind" - the previously mentioned (energy center, scoreboard, etc) + sound still work, and act as if the game is still playing. The key issues I'm left trying to solve are - half of the playfield isn't illuminating, and the auger and "shooter" don't do anything. Purchased a new known good "insert board" as I know that controls the auger, and that didn't change anything. Replaced both sides of the 40 pin connector between the CPU and control board and everything is still the same. The sound is good and the CPU board is showing that it's working fine when I press the test button.

Any suggestions as to voltages I could check, etc? It's going to get expensive if I just buy a new power supply and control board and hope for the best.... Thanks!
 
Well, updating this thread - though I'm guessing most don't care for the Hyperball as there's about 40 views with no replies. Things just took an extreme turn for the worse. This seems to involve basic System 7 pin theory, so if anyone can tell me what I just did wrong I'd greatly appreciate it. After reseating cables, checking for cold solder, checking voltages, etc. for the better part of the afternoon somewhere along the line two fuses blew two times in a row for no apparent reason - the 8 amp on the transformer, and the 4 amp on the power switching board.

Replaced said fuses, and disconnected everything from the power supply board with the exception of J1 & J2, per the pinrepair website. From what I understand, this prevents power from going to any of the other boards, giving me the opportunity to check voltages coming from the power supply board (or in this case, also hoping to see if the 8 amp transformer fuse blew before having it take out the 4 amp on the power switching board again).

Instead, upon power-up two flashes of light occurred across the control board (?!?!), followed by smoke and me unplugging the game. This took out IC1, IC2, IC9 and resistors R70, 71, 72, & 73 - at minimum. My question is, how did juice get to this board if nothing was connected to the power supply board? I've since double checked connections, checked to make sure things were connected back in the right spot (I've taken tons of photos before removing or disconnecting anything), and everything looks OK. At this link are photos of how everything was wired up when things went wrong:

http://www.flickr.com/photos/38961212@N08/sets/72157626124994462/

Any help would be great - I don't want to repair this or purchase a new board only to go through this again...
 
Not between the time where everything was OK and the incident. I did no soldering today at all, and everything was fine the first half of the day. When the fuses started blowing I pulled the boards, reseated connections and verified that there wasn't dripped solder on the back of the board touching to metal where it mounts to the cabinet. Everything looked OK. Then it all got worse.
 
is there possibly something behind the board that is shorting out? do you have a wiring diagram for this machine that you can send to me to look at?

i would like to know where the wires that are in plugs J1 and J2 on the power board go to
that might narrow down where the problem began

i see one fuse missing, maybe not supposed to be one in there anyways.

are you 100% positive that the correct fuses were placed in the correct sockets?

im in no way trying to say your ignorant, just asking these questions as i ask myself the same things when im troubleshooting something


can you pull that board and take some pictures of the back of it as well? and pictures of where the board/s were
 
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No offense taken at all (something changed somewhere along the line or I wouldn't be in this situation) and I greatly appreciate your help. That fuse holder is supposed to be empty on this particular game, and J1 and J2 are coming from the transformer. I'm going to double check the fuse values and connections tomorrow (I've got to step away from this thing for today and look at it with a fresh set of eyes). If everything still appears good I'll up some photos.

Thanks again for your help!
 
i know how that goes, also i didnt notice in the pictures if there was im sorry but i didnt see a before of the burnt board
 
Smoke Flying

One big note in testing these I got from my system 4. When removing driver board to isolate testing remove one or two fuses (the right ones are in the writeup) or coils can lock on and cause frying havoc. That said I cannot help you with system 7 other than what is posted. Good luck and I will be watching the thread.
 
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