Hello everyone!
I have a PAL Nintendo 64 with the following issue.
When I first received the console, I disassembled and cleaned it. It worked fine.
Video quality was not great, so I replaced all electrolytic capacitors. The console still worked and I could play games.
After final reassembly in it's case, it started showing “No Signal.”
What I did so far:
Disassembled again, this time also removing heatsinks.
Cleaned everything again: card slot, AV cable, jumper pack contacts (even with 800-grit sandpaper).
Reflowed electrolytic capacitors and main chips: CPU, RCP, PIF, DENC, and jumper pack connector pins.
Tested various points with oscilloscope (I can share waveforms if needed).
Swapped my Expansion Pak with a new Jumper Pak.
Replaced power supply.
AV cable is brand new, so I don't think this is the cause.
Tried inserting/removing cartridge and jumper pack while powered on (as suggested in some threads).
At this point the console still gives no video output at all.
I was hoping that someone can give me some advice or is available to make a comparison between the measurements made on a working console and mine
Here are measurements (in the Gsheet file) and other related stuff
drive.google.com/.../1_iCxMZg6JVUPDNlzgr-V5CmYrW0aUk71
Schematic of one of the NTSC versions. From what I see what differs from mine is from the video encoder to the output connector.
