Sony Trinitron KV-32TW67


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Sony Trinitron KV-32TW67

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jbelcner
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Nov 17, 2010, 1:01 AM

Post #1 of 15 (2776 views)
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Sony Trinitron KV-32TW67	Can't Post

I have had this TV since 1995. When the set is first turned on, the picture flickers on and off for about 3-5 minutes. Then it comes on and stays on. After about 10 minutes, the picture becomes nearly as clear as the day purchased. The sound comes on and works fine from the moment it is powered up. Any hints on what I can replace.
Thanks,
John Unsure

jts1957
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Nov 17, 2010, 2:01 AM

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Re: [jbelcner] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

THE PICTURE TUBE! Wink

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ian33
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Nov 17, 2010, 2:58 AM

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Re: [jts1957] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

it could be a number of things
first you need check all the cap around the flyback also check for cold solder joints in that same area and
also on the crt board.if all is well change the crt socket or try cleaning it with a contact spray

jts1957
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Nov 17, 2010, 3:37 AM

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Re: [ian33] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

Not if his TIMER light continually flashes until the picture appears, IK bias. Wink

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Location: Far, Far Away

jbelcner
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Nov 17, 2010, 2:47 PM

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Re: [jts1957] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

Is the tube easy to replace?
I will say that in a recent move, the plastic piece was knocked off of the back of the set. I had the TV repaired, but the place the repaired it did a slip shod job in my humble opinion. Are there any connections that I should look for that may have been knocked loose by the movers?
What sort of tool would work to test caps and such in the event the tube is not the answer?

Thanks for the help thus far.
JB

Ron.M
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Nov 17, 2010, 8:15 PM

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Re: [jbelcner] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

jbelcner;....

1st off;=>....

Quote

first you need check all the cap around the flyback also check for cold solder joints in that same area and
also on the crt board.if all is well change the crt socket or try cleaning it with a contact spray

NONE of that will help here.....
You have a heat related problem...

Quote

When the set is first turned on, the picture flickers on and off for about 3-5 minutes.

MOST likely , PICTURE TUBE !!!!

jts1957 is MOST likely right....
You have a 15 year old Sony that the CRTs (Picture tube) generally give out about 10 years old OR less....
Changeing the tube is beyond insane...
They're VERY costly , IF even available & NOT something you can do....
Open up the TV (Remove the back cover) & set it up so you have a pix source (Cable , antenna , DVD player etc) running into the TV...
Look for the flyback....
That is the larger transformer that has the heavy red wire that connects to either the top or the side of the CRT & goes to the top of the flyback....
Keep your hands away from that heavy red wire as it has about 30,000 volts on it when the TV is on OR off....(Retains a charge)....
On the side of the flyback (Usually the rear side) there will be 2 adjustments...
One will be the focus control (Usually the top one)....
The one under will be the "screen" control...
Method #1=>...
Turn the screen control SLIGHTLY Clockwise...
Turn the TV on....
IF your pix comes on within 20~30 seconds & STAYS on , you are all set...
IF not , turn the TV off immediately....
Turn the screen control a bit more Clockwise....
Turn the TV back on....
See if the pix stays on....
OR method #2=>...
Turn the TV on , wait about 60 seconds & then GRADUALLY & SLOWLY turn the screen control till the pix appears...
Stop turning immediately when the pix appears....
This overcomes an "Ik" problem that is due to the CRT getting weak with age....

PLEASE let us know how you did.....THANKS.... Sly

....

Later....Ron.M.... Cool

....
Veteran & Retired TV technician

(This post was edited by Ron.M on Nov 17, 2010, 8:22 PM)

jbelcner
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Nov 17, 2010, 10:06 PM

Post #7 of 15 (2744 views)
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Re: [Ron.M] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

Thanks. I will try and let you know how I fare.
JB

jts1957
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Nov 18, 2010, 2:12 AM

Post #8 of 15 (2740 views)
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Re: [jbelcner] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

That's a temporary solution ~ 3 to 6 months depending on usage. Unimpressed

"Timer" led flashing until the pix comes on IS a very good sign it is the tube.

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Location: Far, Far Away

(This post was edited by jts1957 on Nov 18, 2010, 2:13 AM)

darstr
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Nov 18, 2010, 10:46 PM

Post #9 of 15 (2733 views)
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Re: [jts1957] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

I think it is just sweet that someone is istill in love with a set after 15 years. Pirate

jts1957
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Nov 19, 2010, 1:06 AM

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Re: [darstr] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

They could try to rejuvenate it ... if they can find/borrow a rejuvenator. Cool

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darstr
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Nov 19, 2010, 1:25 PM

Post #11 of 15 (2724 views)
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Re: [jts1957] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

I/ve got one, but it is mine. All mine

Ron.M
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Nov 19, 2010, 8:24 PM

Post #12 of 15 (2721 views)
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Re: [jts1957] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

jts1957 & darstr;.....

If he adjusts the screen volts & gets a pix , chances are that it will last more than 6~12 months.....
If not a gun "cleaning" & not a rejuvenation would be the way to go....
Rejuvenation can & often does remove cathode material that dramatically cuts down on tube life....

Then there's this last resort;.....

A SPB2-ISO Isolated CRT Brightener .......

So he still has choices....

jbelcner;....
How about updating us when you get a chance ????
THANKS..... Sly

....

Good Luck , ya'll....

Later....Ron.M..... Cool

....
Veteran & Retired TV technician

(This post was edited by Ron.M on Nov 19, 2010, 8:36 PM)

darstr
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Nov 19, 2010, 10:04 PM

Post #13 of 15 (2716 views)
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Re: [Ron.M] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

In Reply To

Rejuvenation can & often does remove cathode material that dramatically cuts down on tube life....

Yeah I always enjoy the snap krackle pop after the filements get cleaned. First time I ever did a crt it scared the crap out of me

Ron.M
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Nov 19, 2010, 10:42 PM

Post #14 of 15 (2714 views)
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Re: [darstr] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

darstr;.....

Just to enlighten you a little bit;.....

Quote

snap krackle pop after the filements get cleaned.

You are NOT cleaning the filaments....
You are cleaning the cathode ....
& the snap , crackle & pop scared me the 1st time too.....

Ya lernt sumptin.... Wink

....

Later...Ron.M.... Cool

....
Veteran & Retired TV technician

jts1957
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Nov 20, 2010, 3:41 AM

Post #15 of 15 (2707 views)
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Re: [darstr] Sony Trinitron KV-32TW67 [In reply to]	Can't Post

In Reply To

I/ve got one, but it is mine. All mine

Would you like to shoot me now or wait 'til you get home? Wink

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