Issue with Jamma to Scart adapter

[telonio]

Hello all,

I have this Jamma to Scart adapter and the tv screen is not right. When I power up the power supply the tv changes to av1 as it should be. However the picture is not right, after a while the tv loses the signal and then it finds it again, but the picture is somehow distorted. Also there is a hissing sound from tv. Tv keeps losing the signal again and again.



Please see the video I recorded here:
https://www.youtube.com/watch?v=4n-_M8DJ8LU&feature=youtu.be

Any ideas why this is happening?

Thanks

[lilshawn]

I personally would contact retroelectronik directly. perhaps there is something wrong with it.

[baritonomarchetto]

Are you sure the pcb is ok? Are you sure the tv is ok? Check every item "on the line" first to isolate the problem.

[telonio]

Yes, if I use a supergun with the same pcb then the picture is perfect. Also the tv is working properly with supergun or any other device.

[baritonomarchetto]

Considering how elementar that connector is, check solders and traces and you will find the cause of the issue