DIYbanter - View Single Post - Sony Trinitron KV-32LS35V CRT Dying ?

[email protected]

wrote:

This is a classic picture tube failure, I've seen it as many as 50
years ago on B+W sets. The silver shimmering is exactly the way to
describe it. There is no way to do anything except replace the picture
tube or buy another set.

H. R. Hofmann

I guess the silvery effect is due to the effect of the electron cloud,
which makes continuous electron output well below peak output. White
edges are represented ok, but once that e- cloud is depleted the gun
can only supply a rather lower output, thus highlight areas become grey
while white edges are white.

There are 3 simple means of repairing this. The issue is how long it
would last on a tube thats reached this bad a condition in just 4
years, ie is going down quite fast.

NT