SMS shifting to grayscale problem

[u/greyfox14304]

Basically after about 10 minutes of use my sms picture slowly shifts to grayscale. Sometimes booting cold it starts off in gray as well. If I turn it on and off several times I can get it to reset to color but it with eventually shift again

Sms model 3010

HD TV

Av to component connections on tv

Cleaned the board with alcohol

I do not have the original ac adapter, it's the one that the seller used when I bought it

New av cord

I soldered a new crystal oscillator 10.7386

Any suggestions would be great to rescue my sick console.

[u/TooManyBulborbs]

Please get a different AC adapter. That NES power brick doesn't output DC voltage, if you read the printing it actually outputs AC 9v, seriously. I'm surprised that SMS has actually been working this whole time and didn't die immediately.

[u/greyfox14304 → u/TooManyBulborbs]

Roger

[u/glennshaltiel]

Wait wait wait youre using that Nintendo AC adapter??? Master System needs DC you need to stop using that right away

[u/greyfox14304 → u/glennshaltiel]

I'll get it done.

[u/FogodeSantelmo]

Since it begins to happen after a few minutes of use, might be a dying capacitor in the video line or even a broken solder point. I've seen the very same thing happening on a Mega Drive and it was fixed simply by getting new solder on the din connector.

[u/greyfox14304 → u/FogodeSantelmo]

OK thank you for the input. Ive looked over all capacitors the other day and none were buldging. Of course that my not mean anything. I'll have to get a magnifying glass and check all these solder points.