What are -5v and +15v used for on Centipede?

Jeff F

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Couple of quick/easy questions regarding Centipede...

What -5v used for? My newly rebuilt ARII is putting out -11.8v on this line. I'm just about to take it out again and make sure I didn't do anything stupid... but I'm thinking the 7905 may have just been defective.

Also, what is the +15v line used for? I'm only getting .7v so I'm going to replace the 7815 on the main PCB.

Thanks in advance,
Jeff

p.s. I tried using the search but it's basically useless for small words(ie. voltages) so I was just getting a lot of garbage hits.
 
Couple of quick/easy questions regarding Centipede...
p.s. I tried using the search but it's basically useless for small words(ie. voltages) so I was just getting a lot of garbage hits.

Who do we complain to about that? Searching would be so much easier by allowing longer word searches. I remember not long ago I wanted to do a search that had nothing but three letter words - I don't remember what it was, but I was told I couldn't do it.
 
Is it possible the -11.8v damaged the LM324? I'm getting some pretty low and distorted volume now.

Poop...

[edit]Yep, LM324 bit the dust.


And I'm not sure Peale... it sure would be nice...
 
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