Sony tube tv going bad?

[Phil]

Hello:

This has not been a good week. Last week something killed my (14yo) gas range.
While baking dinner it made a loud snap/crack sound like a light bulb exploded
and stopped working. Clocks dead, ignitors for the stovetop and oven won't work.
Looks like I'll have to replace it.

Now last night our Sony 30" tube tv (aprox 7-9yo) started to act up. We were watching
a dvd when the picture went to black, but the sound was ok. I immediately thought it
was a defective DVD but that's not the case. I turned off the dvd player and tried to
watch some tv but had picture problems. As I flipped channels the picture would be ok
for half a second then go to half brightness, freaky colors and distorted image, then pitch
black. The aux inputs Video 1, Video 2, etc. also were effected. Turning the tv off for a
minute and then back on fixed it for a while then it happened again. The tv seems to be
working ok so far today. So, what do you think? Tuner crapping out or the picture tube
going? I thought the Sony Trinitron sets were long lived and pretty much trouble free...

Thanks, Phil

 

[Meat Plow]

On Sat, 22 May 2010 17:35:32 +0000, Phil wrote:

Hello:

This has not been a good week. Last week something killed my (14yo) gas
range. While baking dinner it made a loud snap/crack sound like a light
bulb exploded and stopped working. Clocks dead, ignitors for the
stovetop and oven won't work. Looks like I'll have to replace it.

Now last night our Sony 30" tube tv (aprox 7-9yo) started to act up. We
were watching a dvd when the picture went to black, but the sound was
ok. I immediately thought it was a defective DVD but that's not the
case. I turned off the dvd player and tried to watch some tv but had
picture problems. As I flipped channels the picture would be ok for half
a second then go to half brightness, freaky colors and distorted image,
then pitch black. The aux inputs Video 1, Video 2, etc. also were
effected. Turning the tv off for a minute and then back on fixed it for
a while then it happened again. The tv seems to be working ok so far
today. So, what do you think? Tuner crapping out or the picture tube
going? I thought the Sony Trinitron sets were long lived and pretty much
trouble free...

Thanks, Phil

Sorry to read about your loss.

 

[hr(bob) hofmann@att.net]

On May 22, 12:35 pm, P...@INVALID.com(Phil) wrote:

Hello:

This has not been a good week. Last week something killed my (14yo) gas range.
While baking dinner it made a loud snap/crack sound like a light bulb exploded
and stopped working. Clocks dead, ignitors for the stovetop and oven won't work.
Looks like I'll have to replace it.

Now last night our Sony 30" tube tv (aprox 7-9yo) started to act up. We were watching
a dvd when the picture went to black, but the sound was ok. I immediately thought it
was a defective DVD but that's not the case. I turned off the dvd player and tried to
watch some tv but had picture problems. As I flipped channels the picture would be ok
for half a second then go to half brightness, freaky colors and distorted image, then pitch
black. The aux inputs Video 1, Video 2, etc. also were effected. Turning the tv off for a
minute and then back on fixed it for a while then it happened again. The tv seems to be
working ok so far today. So, what do you think? Tuner crapping out or the picture tube
going? I thought the Sony Trinitron sets were long lived and pretty much trouble free...

Thanks, Phil

Sounds like the circuit that monitors the crt called the IK circuit or
something like that is cutting out the video because the circuit
thinks the CRT is going out of balance for the 3 guns.

 

[William Sommerwerck]

This has not been a good week. Last week something killed
my (14yo) gas range. While baking dinner it made a loud
snap/crack sound like a light bulb exploded and stopped
working. Clocks dead, ignitors for the stovetop and oven
won't work. Looks like I'll have to replace it.

I expect a range -- gas or electric -- to last at least 20 years, maybe 30.
This sounds like a power-supply problem that ought to be fixable -- though
whether it will be at a "reasonable" price, I don't know.

So, what do you think? Tuner crapping out or the picture tube
going? I thought the Sony Trinitron sets were long-lived and
pretty much trouble free...

It /can't/ be the tuner, because the line-level inputs also have a problem.
My guess is the chroma chip, or some nearby component.

Sonys do seem to be reliable. My KV-1920 lasted more than 20 years (needing
only a $70 power-supply repair), and my current 400-series 36" flat-face is
almost 10 years old, with no problems.

 

[b]

On May 22, 6:35 pm, P...@INVALID.com(Phil) wrote:
y. So, what do you think? Tuner crapping out or the picture tube

going? I thought the Sony Trinitron sets were long lived and pretty much trouble free...

Thanks, Phil

It's almost certainly not the tube, it's too sudden. I'd be looking on
the crt neckboard for cracked solder joints, and check the vicinity of
the line stage.
-B

 

[William R. Walsh]

Hi!

Looks like I'll have to replace it.

Why? A little investigation might reveal something very obvious, especially
if it made a loud noise. It could well have *been* a bulb exploding due to
age or something else. If it was on at the time, a failing bulb could have
blown an internal fuse or popped a circuit breaker.

Don't know what to tell you about the TV, but your range is very likely to
be fixable with some basic troubleshooting. It's worth a shot and will cost
less than replacment.

William