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Thank you for the assistance. I'll need to order a couple of things, including the replacement part, so it will be a bit of time before I can report back.

I should start by saying that I do not have plans to trash anything- the case and other parts are quite nice actually. I do not have any other boards to salvage from just yet. I was able to remove the bad part by overflowing with solder, but it looks like there was other damage to the board...

Two legs ended up falling off. The pads on the board are damaged too, from the looks of things the trace and thru-hole as well. Seems like this might not be easily repairable. I'm also not sure where to get a replacement F245.

I think I found the issue: U25, a F245 bus transceiver. This was next to a leaky cap. I thought I had it clean enough, but when I went over the area again one of the legs fell off :/ Based on the block diagram of the 610 this would probably cause issues reading the ROM at startup.

I forgot to add: the board was believed to be working before I got it. At least one cap was missing when I got it so I never tried to power it on before doing the recap. 8 of the remaining 9 fell of with a gentle tap. Only one had to be desoldered.

The PSU has solid 5v and 12v. The neg is -12.25. G1 measures a consistent 2.2V on that pin which seems middle-ish? I bought this adapter: https://www.amazon.com/gp/product/B0016OC1J2/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 I would expect some signal to at least say "out of range" on...

I double checked C53, and it seems to be OK. I also checked the VLSI chip next to the CPU. I didn't notice any shorts or corrosion when looking at it under my "toy" USB microscope. I cleaned everything with 99% IPA, let dry and also used air to blow out anything under chips. I did not soak the...

The battery is new and has the correct voltage. I've also tried with and without VRAM. It should have onboard VRAM and RAM. Here is the top of the motherboard. I can take a closer picture of an area if needed. Thank you!

I have a Quadra 610 I'm trying to restore. Many of the original capacitors fell off, so I've replaced all 10 of them. There was some minor surface goo around two of the capacitors. Around C50 - the 74F245 - had some crud on it but it came clean. The legs are intact and seem to be OK now. With...