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.

"Here is a bit of information regarding the video blanking at turn on
in Sony tv
sets that use the IK detect line.

With the tv set in a full cold start, look at the cathodes of all
three of the
guns with the oscilloscope. It will take some work with the scope
settings to see
the blanking pulses during the vertical retrace time.

Take a good look at the pulses, they all 3 should be fairly close to
the same P-P
value, usually between 50 and 150 volts. If one of them is much
smaller or much
larger than the other 2 the crt guns are getting very weak and way out
of balance
causing the blanking problem at turn on. At this point the only
proper fix is to
replace the picture tube.

In about 50% of the cases a newer low current crt rejuve only on the
bad gun can
sometimes rebalance the guns for better AKB performance.
In some other cases a slight increase in the g2 voltage will allow a
better turn
on and gray scale.

We have seen a lot of older Sony tv sets coming in with the same
symptom as he
described it with the above troubleshooting and failure result.

Some older sets also had bad solder connections to all of the voltage
regulators
in the center of the main circuit board.

The ones with the stand up power supply on the side of the chassis
have a special
capacitor 1000uf16v that goes bad and can cause poor power supply
regulation.

David".

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