No Flashers or Blower

cathaldub

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I'm looking for some help/advice
I've a williams whirlwind which I've been fixing up and I cant for the life of me figure out why the playfield flashers and topper blower wont come on.
I've tested all cables for continuity, all fuses, replaced all bulbs.
The board the blower plugs into had some bad solder joints which I've fixed.
The lightning flashers work fine.
Its just the 5 on the main playfield, I cant really make much sense of the diagrams in the manual.
Maybe I'll just have to remove all the boards one by one and check for bad solder joints, has anyone any idea?
 
You pulled the fuses to test them correct?

Do the coils on the same circuit work?

Page 95 of the manual has a "Switched Solenoid" table... check that.

It's possible that the transistors are bad, unlikely that that many are bad.

The transistors to the flashers are noted in that table as well IE "Bottom Right Flasher (Q33)".

-Mike
 
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Flashers sounds like the A/C relay, or the transistor that drives it. I'd start there. Blower may or may not be related; not sure how it's wired in.
 
Thanks for the help, I pulled all the fuses and tested them, they were all OK.
I'll have a look at that table and see what I can come up with
 
Well the blower turned out to be a dry solder joint on the triac board fuse holder and it was barely noticable, only when I had the triac board removed and I pulled the fuse and wiggled the holder could I see ever so slight movement on one of the legs.

Although I noticed another problem tonight, I thought the in game music was disabled in the settings somewhere but it's not, it's just missing but does come back after you've activated the storm on ball3 for a while then gets kinda corrupted, I think all the speech is there and the attract music too
I've burned rom u4 which is the sound rom but it's made no difference, maybe i'll try the 3 speech roms later tonight
 
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I worked on a Whirlwind for a customer last week with no flashers.
The contacts on the A/C relay where welded closed on the coil side, so it sounded like it was working.
The relay had been replaced before by someone who should not be doing board repairs.
They must have pulled the plating out of holes while prying the old relay off in one piece.
I was able to find a socket that had the same footprint as original relay, which can hold a heavy duty relay with much larger contacts and lugs.
 
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