Problem with palette discoloration when PPU is turned off during rendering.

Discuss technical or other issues relating to programming the Nintendo Entertainment System, Famicom, or compatible systems.

Moderator: Moderators

User avatar
N·K
Posts: 10
Joined: Mon May 11, 2020 2:45 am
Location: Japan

Re: Problem with palette discoloration when PPU is turned off during rendering.

Post by N·K » Thu Jun 10, 2021 4:00 pm

My AV Famicom serial number was HN10804140.
I checked again the type of stickers and the arrangement of parts visible from the back, and I still think it's the HVCN-CPU-02.

However, the conditions for this phenomenon to occur seem to be quite unstable.
The probability of the phenomenon occurring on my Famicom seemed to be roughly 25%, but there were times when it occurred continuously every time the power was turned on again, and times when it did not occur more than 30 times.
It was also not uncommon for discoloration to gradually (or quickly) stop occurring over time, even if discoloration was present immediately after startup.

Post Reply