Have a relic and desperate customer with vertical roll, can make out text as FDX 1- 1.
Have two others for parts but both have FBT's gone and caps NBG. So far have replaced
Vert IC TDA1175, Horizontal Sync MC1391P and caps in secondary, primary and drive.
Yoke appears OK and connections fine, could this be data error? Working without schematics.  Any insight appreciated. TIA Rob.

Have manual available for WY50 but not WY55

... Stephen   03-5771-1277 (HCSD)

Yes, I have the 50 and the 60 but this is quite a different layout and using TDA1175 in the vertical, whereas the 50 uses TDA1170. On the 50 I think it had vertical roll adjustment
by means of a pot but the 55 has only V lin and V size and I am not sure which chip does
the synchronizing or if discrete components. The brains chip is also different which I suspect is not happy.

My experience with the 60's was to check the solder joints with an eyeglass around all the larger ic's.
This gave intermittent characters and screen roll.

Yes, I have read about that and had a quick look, tried the freeze spray on the ic's. I will have a closer look and report back ...thanks.

Thanks to all for help on this. I shelved it for a while then swapped out the eeprom with
another the same and presto problem solved.