Pinballlife Order
- Thread starter SpiderPin
- Start date
Also in stock here if that helps.
Any idea on the chip number? (Manufacturer number)???
Edit : Oh it's the PAL chip...!
If you have no sound, see here.. might give some clues : https://pinside.com/pinball/forum/topic/possible-to-test-u19-and-u20
@s000m m Unfortunately its the BW U20 - https://www.pinballlife.com/williamsbally-uln2803a-switch-matrix-driver-chip.html
#5162-12422-00 & ULN, 2803A.
If anyone has one and can save me the pain of shipping it from the US let me know!
The 2803A is available from Cricklewood.... https://www.cricklewoodelectronics.com/ULN2803A.html Standard Darlington driver chip.
From PUParts :
"ULN2803A switch matrix driver chip used in all Williams/Bally WPC machines. Common failure chip (position U20 on the CPU board). Common cause of "ground short row" error message. Williams/Bally reference #5162-12422-00 & ULN, 2803A."
From PUParts :
"ULN2803A switch matrix driver chip used in all Williams/Bally WPC machines. Common failure chip (position U20 on the CPU board). Common cause of "ground short row" error message. Williams/Bally reference #5162-12422-00 & ULN, 2803A."
Thank you - ordered.
Cricklewood electronics have saved me a few times when I struggled to find components. Great little shop 
Ordered from them yesterday after finding a power box in one of our new wpc games doesn't have a fuse holder.
Ordered from them yesterday after finding a power box in one of our new wpc games doesn't have a fuse holder.
Amazing little place, I used to go into the shop in the 80’sCricklewood electronics have saved me a few times when I struggled to find components. Great little shop
Ordered from them yesterday after finding a power box in one of our new wpc games doesn't have a fuse holder.
Just up the road is Edgware Road which was sound system heaven for me at the time, happy days.
Ditto above. I use Cricklewood regularly. If there is ever a problem like dented in post electrolytic capacitors they just sort it out no messing.
I use cricklewood as often as i can. They are great for those hard-to-find things, and i certainly believe in supporting the "smaller" retailers rather than the larger ones
we can get these in if still required
There is also a decent seller - finedon electronics on ebay, who has loads of stuff at really good prices incl. free UK postage:
2 Pcs ULN2803A ULN2803APG TOSHIBA NPN 8 Darlington Transistor Array IC UK Seller | eBay
2x ULN2803A IC's Supplied. The eight NPN Darlington connected transistors in this family of arrays are ideally suited. Mon - Fri 9 - 3pm, Sat 9 -11 am. for interfacing between low logic level digital circuitry (such as TTL, CMOS or PMOS/NMOS).
www.ebay.co.uk
I have these in stock, probably too late though. Collection from Cwmbran.
