NESE-001 PIN21 voltage to high - No Audio/Video Composite

Hi all,

my NES shows not picture or audio whether with or without cartridge and independent of the display device (CRT and TFT)

72 pin looks fine. Cleaning has been done.

No bulky capacitors or any other odd-looking component.

But the PIN21 on the PPU shows about 3,79VDC. I dont have an oscilloscope yet to proof there is a video signal.

Someone any clue what causes this?

Thanks a lot

Statistics: Posted by bruunooh — Mon Jan 20, 2025 6:31 pm — Replies 4 — Views 221

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