Help: 130xe cycles colors

[Place Logo Here]

Bought a backup 130xe and it is doing something I have not seen before:

 

 

In addition to this random cycling through various colors, games sometimes crash.  These issues are happening whether content from cartridge or my SIO2SD.  Passes all internal tests, though this same issue with the background colors happens there as well.

 

Thoughts?

[+Stephen]

I would definitely check the power supply voltage to make sure it is steady (and not over 5.1 or 5.2VDC).  There is an adjustment pot on the bottom of the machine which MAY be causing the colour issue, but that would not cause the machine to crash.

[Rybags]

What's the audio doing?  Buzzing or other noise can be sign of overvolting PS.

[Place Logo Here]

Thanks for the replies.  Audio is fine and, since the power supply works with my other 130xe, it appears the issue is the adjustment pot screw was missing from the underside.  Didn't know that screw was so important!  Thought it just helped keep the case together.  Problem appears to be resolved.  

 

Thanks again

[BillC]

On 10/27/2020 at 2:01 PM, Place Logo Here said:

Thanks for the replies.  Audio is fine and, since the power supply works with my other 130xe, it appears the issue is the adjustment pot screw was missing from the underside.  Didn't know that screw was so important!  Thought it just helped keep the case together.  Problem appears to be resolved.  

 

Thanks again

I've never seen a screw in the color pot access hole, it's just intended for adjusting the pot without opening the case.