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@bigmessowires Yes, finally. Super happy about it, thanks! @dochilli Yeah it was recapped a while ago. Through all of this simasimac troubleshooting and testing, I wonder if I fried the speaker. I also did replace chip UA9 in the process. It always had been working, though with crackling. Now...

Oh wow.... what a way to end the weekend. Pin 5 of UE7 to pin A6 of the CPU. Still don't have sound, but a major win for now. Thank you to everyone for the help...

This might just be the default state of the VRAM. I replaced one of the 41264s with a Texas Instruments version

Well that's interesting. This is what I got after soldering pin 1 of UE7 to pin 2 of UE6 and pin 7 of UE8

Although one thing (actually many things) that doesn't have continuity is pin 1 of UE7 to all of its endpoints. I tried adding a little solder, nothing. I'll try to wire them up and see what happens

Whoops, that was pin 7 I was checking haha, my mistake. Pin 8 has continuity with UE7

@Chopsticks That lead wasn't actually making contact with anything; it is raised off of the board slightly. Good eye though! Yeah I think going over the video circuitry is the logical next step.. will report back..

@AstroFirebird Yeah I had actually read through the thread you posted. Glad you were able to give yours some more life! So I just tried pin 8 of UJ6 to 4 of UE7. No usual beep that would signify continuity, just 527 on the screen. Have to look up what that means as I'm basically just learning as...

@bigmessowires Yeah that's what I was initially thinking. Although I left it on for a while with the regular SE board in it, and the screen came back on. I feel like the SE/30 board is shorting out something, although I am speaking with basically no knowledge and don't know if that's even a...

Thank you both for the replies and the suggestions! Yeah I only have a multimeter and a soldering station at the moment, definitely looking to acquire more useful tools in the near future. I'll look for that pinout you mentioned. Need to get a Mac from this era working so I can use my Floppy Emu...

So I had gotten this Simasimac SE/30 a while ago and tried to repair it. I posted about it on TinkerDifferent (https://tinkerdifferent.com/threads/simasimac-help-please.2842/#post-25938). I think I'm going to call this one unfixable, or at least not fixable by me. The SE/30, when shipped to me...