the screen flashes on then goes out although the sound works? anybody
know what the problem may be or a guesstimate on how much to fix it?

Thanks


Trey W

If you mean, the picture comes in, then flashes to black, & back on to
a normal picture, & it keeps flashing at a regular interval, you MAY
have the "common" Sony bad picture tube! If you have access to a proper
picture tube booster, you could try to boost it, or sent it to a repair
shop! This isn't always repairable. Dani.

Has anyone seen bad tubes on these sets? The sets from the 1990s maybe, but
I have yet to see a bad CRT on the xbr400. Lots of wierd intermittent and
ps reg problems, a few bad caps, and HV protect circuit sensitivity
problems.

"Dani" wrote in message
ups.com...
If you mean, the picture comes in, then flashes to black, & back on to
a normal picture, & it keeps flashing at a regular interval, you MAY
have the "common" Sony bad picture tube! If you have access to a proper
picture tube booster, you could try to boost it, or sent it to a repair
shop! This isn't always repairable. Dani.


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Leonard Caillouet wrote:
Has anyone seen bad tubes on these sets? The sets from the 1990s maybe, but
I have yet to see a bad CRT on the xbr400. Lots of wierd intermittent and
ps reg problems, a few bad caps, and HV protect circuit sensitivity
problems.

"Dani" wrote in message
ups.com...

If you mean, the picture comes in, then flashes to black, & back on to
a normal picture, & it keeps flashing at a regular interval, you MAY
have the "common" Sony bad picture tube! If you have access to a proper
picture tube booster, you could try to boost it, or sent it to a repair
shop! This isn't always repairable. Dani.



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yes yes yes sonys like many others have an IK curcuit , this circuit
is there till all the guns are equal before the pix come on. they do
this so you don;t have an off color pix when first turned on. sometime
we crank you the G2 control on the flyback. it is the lower control on
the fly...don't crank too high but just a tad. sometimes this will help
but it does sound like your tube is on is way out

"David Naylor" wrote in message
. ..
Leonard Caillouet wrote:
Has anyone seen bad tubes on these sets? The sets from the 1990s maybe,
but I have yet to see a bad CRT on the xbr400. Lots of wierd
intermittent and ps reg problems, a few bad caps, and HV protect circuit
sensitivity problems.

"Dani" wrote in message
ups.com...

If you mean, the picture comes in, then flashes to black, & back on to
a normal picture, & it keeps flashing at a regular interval, you MAY
have the "common" Sony bad picture tube! If you have access to a proper
picture tube booster, you could try to boost it, or sent it to a repair
shop! This isn't always repairable. Dani.



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yes yes yes sonys like many others have an IK curcuit , this circuit is
there till all the guns are equal before the pix come on. they do this so
you don;t have an off color pix when first turned on. sometime we crank
you the G2 control on the flyback. it is the lower control on the
fly...don't crank too high but just a tad. sometimes this will help
but it does sound like your tube is on is way out

Actually, Sony stopped blanking the pix when it can't balance the guns a
couple of years ago. Now you get the LED flashing to indicate IK failure
but no blanking.

Leonard

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Had one with no red that came on just fine. Actually the filament was
out.

JURB

PS, Watch for my next thread.

JURB