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Title: Famicom with garbled graphics and no sound
Post by: ecarrilho on September 28, 2020, 06:01:51 pm

Hello!

I have a original Famicom, with no mod that was working before.

Today, after a long time with no use, I faced this issue:

(https://i.imgur.com/8C1QpW9.jpg)

There is no sound and when I tried to start the game, pressing Start on controller, nothing happens.

Below, with F1-Race cartridge:

(https://i.imgur.com/KEHfBBX.jpg)

I cleaned the motherboard and cartridge slot with isopropyl alcohol, but with no success.

(https://i.imgur.com/yrHbEp7.jpg)

Can be a PPU or CPU fault? Or both? :'(

They are a little hot at touch.

I have a faulty Famicom unit that can be a donor for some parts.

Any help will be appreciated.

Thanks!!

Title: Re: Famicom with garbled graphics and no sound
Post by: FAMICOM_87 on September 29, 2020, 02:25:24 am

looks like a video RAM problem.

Title: Re: Famicom with garbled graphics and no sound
Post by: boye on October 11, 2020, 07:48:45 am

Like FAMICOM_87 said, it's probably bad VRAM. Try replacing the VRAM chips.

Famicom World

Family Computer => Technical & Repair Assistance => Topic started by: ecarrilho on September 28, 2020, 06:01:51 pm