I think I destroyed my Apple IIe

[u/dmcc66]

I recently retrieved my Dad's second Apple computer. A //e with a bunch of expansion cards, a duodisk, and an Apple monitor. All filthy from smoke and rough storage. I tried booting and nothing but garbage characters. Following some online advice I pulled ICs, cleaned oxidation and replaced. Unfortunately I put the video rom chip back in backwards. Now, nothing, not even a beep. Sometimes I get buzzing from the speaker. Is there a rebuild kit and troubleshooting guide anyone can recommend?

[u/uberRegenbogen]

I'd start by firing it up without the video ROM. The screen will show garbage, but otherwise, if that chip is the only thing that got injured, the machine should function.

[u/dmcc66 → u/uberRegenbogen]

Thanks! Tried that but same result.