Ali
Stern Electronics, 1980You're currently viewing posts by Pinsider zacaj.
Click here to go back to viewing the entire thread.
Original metal was brushed stainless. Could have just been repainted. I don't think any other manufacturers (including modern stern) are compatible.
Missing segment is usually a bad resistor or transistor on the display board.
You'll probably need a picture of that tilt for the wiring, but standard tilt parts should work. http://pbresource.com/tilt.html#oldstern
Quoted from Rondogg:FYI, I found the Stern Parts catalog to be very helpful at identifying part numbers/info. The tilt assembly is listed on page 59.
http://howtopinball.com/files/pinball/paperwork/stern-classic/stern-parts-catalog-19.pdf
Link doesn't work 
Quoted from Atari_Daze:That is a capacitor, yes you should put a new one on there, .05mf (or .047mf disc capacitor) 50V
Readily available any pin supply house or electronic store.
These from Ed would be fine:
https://www.greatplainselectronics.com/proddetail.asp?prod=CCD-0.047uF-100V
Also you don't technically /need/ it. It just makes the tilt mech a bit more sensitive
Quoted from Spyderturbo007:It looks like they are all 1/4w resistors. Would this be a good choice?
They all are, yes. However, a few were underspecced, and it's recomended these days to use 1/2w for them. The ones for this segment aren't the ones that you want 1/2w for though, so your 1/4 will probably be fine. I tend to always replace stuff with 1/2w when possible since it's just higher specced. If you're ordering parts from digikey/etc anyway might as well buy some 1/2w for ones that you may be replacing.
Other parts that are just generally good to have on hand for bally/sterns:
2N5060 and MCR106 MCRs for the lamp board tend to go bad
2N5401 and MPS-A42 for the display transistors
TIP102 transistors for the driver board
Quoted from Spyderturbo007:Thanks so much for the offer Dave. I'm flushing out a few other issues and then I'll definitely take you up on your offer.
What's the best way to diagnose a lamp socket? I'm assuming I can test for voltage coming into the socket? I've replaced the bulb and nothing. I also have a few that are really dim regardless of what bulb I insert.
Does each lamp have its own transistor on the driver board?
Also, is there anything special I'd need to know if I decided to put LEDs in this thing? I put one in and it barely lit up and was strobing. I stuck one in the back box GI and it looked just fine.
Each lamp has its own SCR on the lamp board. There should be 5VDC on the common wire running between all the lamp sockets. If a new lamp won't light, and there's voltage on the common wire, try using alligator clips to connect the lug of the socket to another working one. If it lights, then there's an issue with the lamp board or connectors. If it still doesn't light, replace the lamp socket.
LEDs can't be used in bally/stern without a special lamp board or adapters due to the way SCRs work. Usually not worth it. LEDs are fine for the GI though.
Quoted from Spyderturbo007:I reseated the cables on the lamp driver board and now some that didn’t work before are working and some that worked before aren’t working. Hummmm.
Connectors or solder joints on the header pins would be the next place to go I guess?
Yep, start by reflowing the solder joints. Connectors go bad much less frequently than the solder. usually there's at least 5-10 bad joints on any lamp board
Quoted from cottonm4:Data East standard body lockdown bars are black and will fit any standard body Stern from Ali to Dragonfist. I own both brands; This is not idle talk.
Are DE style compatible with modern stern? or did they switch at some point?
You're currently viewing posts by Pinsider zacaj.
Click here to go back to viewing the entire thread.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/help-with-ali?tu=zacaj and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.
Rochester, NY
