DIYbanter - View Single Post - Sharp TV - Blue Screen

wrote:
I think maybe you have used a sub standard part... please to convince
the master why i shouldnt think this...?

The only thing that I changed was the HOT and the fuse. The fuse is
certainly not the cause. Before changing the HOT I got a data sheet. I
replaced it with an exact same part with the same specifications.
However I don't think the HOT is the cause of the problem. I think that
the picture tube is shorting causing the blue raster, then putting a
load on the HOT causing it to fail. I've isolated the filament pins on
the tube circuit board and used Mr. Goldwasser's trick of having a
floating cathode circuit (wrap a wire around HV transfo ferrite). If the
short is to the cathode then the TV is fixed. Has been running now for
three days.
(If the master is not convinced about substandard part being used, can
he explain?)