17-08-2018, 08:49 PM
(17-08-2018, 02:55 PM)djrm Wrote: Hi, I've got some nice yellow 630v axial caps on order, but in the meantime I have found some suitable replacement parts in the spares box. The frame timebase is almost linear now. The EHT is still low and the line linearity is a bit off and the width is too much. but we have a picture just about in focus - it drifts off as it warms up, mainly I think because the EHT fades. Is there any way to center the image on these sets? Thanks for thre loan of the video test pattern generator Trevor, it has been very useful already. Next thing is to check more resistors in the timbase circuits then I'll see if I can get a modulator working and check the RF stages again.
Hi David.
Getting there, as Terry says once the EHT is fixed the picture size will be normal.
Keep the generator David I've plenty of sources of patterns and I'm sure Frank will be pleased its of use to you.
Good luck.
