View Single Post
Old 7th Aug 2017, 12:00 pm   #68
FERNSEH
Dekatron
 
FERNSEH's Avatar
 
Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
Posts: 7,444
Default Re: Pye VT2 EHT problems

Looking at those pictures I get the impression that the frame timebase is running too fast, is there any evidence of flicker? That will prove that the FTB is running too slow, that is <20mS. Reducing the value of R60 (390Kohms) will increase the speed of the timebase. It's assumed that capacitors C46 (0.5mfd) and C49 (0.25mfd) have been replaced. Has the decoupling electrolytic capacitor C44 (12mfd) been checked or replaced?

DFWB.
FERNSEH is offline