Apple IIGS display problem

[Wawavoun]

Hello there,

I have an Apple IIGS connected to a lcd tv via the scart (peritel) socket.

With other computers (for example Apple IIe + Chat Mauve or CPC6128) this socket is ok.

I get the the subd15 to scart cable from England on Ebay.

The problem is that sometime the tv loose the vertical sync.

The display is stable and perfectly looking for some seconds and then he start to slowly move vertically then stabilize again and so on....

I carefully check and move the cable searching bad contact but everything look good.

On your opinion should I try another tv or is the problem inside the IIGS ?

Thanks and regards.
Philippe

 

[Wawavoun]

Solved !
Switching the frequency setting of the IIGS from 50 Hz to 60 solve the problem.
Now the display is stable.
Strange that I have to use a US (NTSC) setting for a EU Philips tv ???