"Barry Minchey" wrote in message
...
I found the G2 on the board attached to the CRT. When I
dial it up the
flickering begins sooner than before. It certainly isn't
acceptable. I
saw a post from 1999 from a David which may have been you.
Archived post
"Here is a bit of information regarding the video blanking
at turn on
in Sony tv
sets that use the IK detect line.
archived post snipped
I hate to toss out what was a very nice set. Do you have
any thought
that the power supply board could be at fault? I could
certainly
replace the capacitor mentioned above if it would do any
good. I
apologize, I'm still in denial.

Barry

On Mon, 12 Nov 2007 15:40:55 -0600, "David"

wrote:


"Barry Minchey" wrote in message
...
Thanks David! Is that an adjustment on the flyback?


snip
Barry

The CRT is failing. The AKB circuit blanks the screen if
the
emission is below a certain point. You may be able to
get
a
little more life out of it by increasing the G2 voltage
a
bit.

David

Usually, yes (the lower one). Some Sony sets had the G2
adjustment on the CRT socket board. I do not recall which
one was on this model.

David

Hello Berry,

I did not write the archived post, but it appears largely
accurate.

I assume you do not have a schematic of this set, but there
is one more thing you can try. You may have low heater
voltage on the CRT, but first you have to determine how the
CRT filament voltage is supplied. A simple voltmeter can not
be used to measure the filament voltage. These sets get that
voltage from a winding on the horizontal output transformer.
There are two cases: 1) the winding directly feeds the high
frequency AC to the filament [usually through a low
resistance voltage dropping resistor of 2 - 5 ohms], or 2)
the voltage is rectified and filtered with a capacitor and
DC is fed to the filament [again possibly through a dropping
resistor]. If yours is AC fed, Bridge the dropping resistor
with one of equal value and see if that helps. If so, you
can leave the resistor bridged and coax a bit more life out
of the set. If it is DC fed, check the filter capacitor for
high ESR or just replace it. If that helps your are done, if
not, try bridging the dropping resistor as above.

David