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Sound but no video through composite and s-video

I have a QIP2500-3 STB. My tv is a FHD2400, its a monitor by Gateway.
There is 2 other QIP25003 STB around the house. As welI, also get only sound and no video while using S-Video.

I've checked the wire, and there is current flowing but no signal.

Coax works fine, its only s-video and composite that does not work on all 3 of my STB.

I have tested the S-video and composite on my monitor with a DVD player and using the Wii. They work fine, its only the STB that does not display video on these ports.

The STB has displayed video through S-video and composite before. But that was before a black out that had occured.

After the blackout, S-Video and composite DID NOT work at all.

How do I get the STB to display video using those ports?


Should I simply replace my STB?

Re: Sound but no video through composite and s-video

Never had any issues with the S-Video or composite on my 2 2500's.  Sounds like something may have fried during your blackout.  I would attempt to get the boxes replaced or get a service call.  I might also suggest adding surge protection to all the boxes (a UPS would be even better) if you don't have it already.