asteroids help

[kevlarunderwear22]

   While fixing a "hum" on my asteroids, I was desoldering  an LM324 (audio amp IC) on the pcb. but being a newbie I messed it up (maybe shorted something and/or ruined the chip) . when I went to power up the whole game was dead, except the marquee. wouldn't play blind, and the p1,p2 lights just steadily lit.
   Now upon power up I get neckglow for a second and then quickly almost no glow (is this the spot killer kicking in?)
   At the edge connector im getting just 8vac at pin 20, while the manual shows I should be getting 36vac. also im only getting 5 and 10vac at pins 7 and 10 of the molex connector feeding the monitor, when I should be getting 30vac. and  im not showing any voltage at the X and Y outs of the pcb.
   I am getting the proper 5 and 10.3vdc on the AR board, and I am getting 5vdc at pin 2 of the pcb edge connector.  Ive recapped the whole game including big blue, and replaced the bottlecap transistors on the chassis, and all fuses are good.  I really hope someone can point a newbie in the right direction. thanks for any help

[iankellogg]

well first reinspect all of your work. you probably are still shorting something out.

The monitor is in spot killer so you are fine there.

[kevlarunderwear22]

thanks for the suggestion Ian, ill do that. I don't know how something as simple as an audio amp chip would kill the whole game. I did discover a small 3- leg transistor that had been "twisted" so the legs were shorting against themselves. ill be so happy if I can bring that game back to life.

[iankellogg]

if you managed to short the power rails to a pin you might be drawing too much current and killing off the supply.

[kevlarunderwear22]

I am showing 20vdc on the two LM324N chips located on the main pcb. (boy that seems like a lot of voltage). but at least theres power there.
these are quad op amps that are notorious for causing a hum.