[TechAssist] Re: Sony 35" TV KV-35XBR48 - Shutting Down For 6 Months...Now Dead
- From: "Damon" <damon101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 27 Nov 2004 00:17:57 -0500
The original heater connections are grounded, pulling the shorted blue
cathode to 0 Volts, when it's normally 120 - 150Vdc....cutting the heater
connections and using a piece of wire wrapped 3 times around the IHVT core
just creates a new heater winding that is ISOLATED and NOT Grounded.....get
the picture??
Damon Brunger
Telrad Electronics
Ft. Wayne, IN
----- Original Message -----
From: "David" <mr_fixit@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, October 26, 2004 11:43 AM
Subject: [TechAssist] Re: Sony 35" TV KV-35XBR48 - Shutting Down For 6
Months...Now Dead
> What happens to the (HK) short in the CRT then? I don't quite understand
> how replacing the heater voltage source with this FBT wrap source
> corrects a HK short. Wouldn't the short still exist? I was under the
> impression the short had to be zapped away for the tube to function
> again. Could someone please educate me on this topic?
>
> Thanks,
>
> David Lessard
> Alexandria Electronics
> mr_fixit@xxxxxxxxxxxx
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Myers
> Sent: Friday, November 26, 2004 12:25 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Sony 35" TV KV-35XBR48 - Shutting Down For 6
> Months...Now Dead
>
> Sony P/N is 8-733-760-05 NLA subs to 8-733-761-61. Original tube number
> is A89LJT80X. If it is a H/K short you can fix it by replacing the
> heater circuit with 3 turns of wire around the FBT core, isolate the
> heater pins on the CRT socket by cutting the circuits then connect the
> new heater wire to the isolated heater socket pins. If the short is from
>
> G1 to G2 this will not work and probably will need a new or rebuilt CRT.
> ************************************************************************
> *******************************************
> Since 1972
> Jim Myers
> Telrad Electronics
> Fort Wayne, Indiana
>
> David wrote:
>> Could anyone provide me with a Sony part number for this CRT please?
>> Sony customer service wanted $5 to provide me with the number...are
> they
>> nuts?
>>
>> David Lessard
>> Alexandria Electronics
>> mr_fixit@xxxxxxxxxxxx
>>
>> -----Original Message-----
>> From: techassist-bounce@xxxxxxxxxxxxx
>> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of David
>> Sent: Monday, October 25, 2004 9:49 PM
>> To: techassist@xxxxxxxxxxxxx
>> Subject: [TechAssist] Re: Sony 35" TV KV-35XBR48 - Shutting Down For 6
>> Months...Now Dead
>>
>> I'm supposed to visit this XBR patient on the weekend. I don't own a
>> tube rejuvenator (I should invest in one soon) but I've read about a
> few
>> techniques I may try. I.e. placing tube face down and gently tapping
> the
>> neck or charging an electrolytic and "blasting" the short away. Has
>> anyone had any success with these techniques? If this problem proves
> to
>> be an unfixable HK short in the CRT how much would a replacement tube
>> cost? Does anyone know the Canadian cost? I imagine SONY is the only
>> source for this...right?? Is it possible for these CRT's to be
> rebuilt?
>> Sorry about the many questions, I'm trying to help out a new customer
>> who is quite frustrated about his 6 year old very expensive TV dying.
>>
>> Of course this may turn out to be some other problem. I won't know
> till
>> the weekend.
>>
>> David Lessard
>> Alexandria Electronics
>> mr_fixit@xxxxxxxxxxxx=20
>>
>> -----Original Message-----
>> From: techassist-bounce@xxxxxxxxxxxxx
>> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Peter oliver
>> Sent: Tuesday, November 23, 2004 9:33 AM
>> To: techassist@xxxxxxxxxxxxx
>> Subject: [TechAssist] Re: Sony 35" TV KV-35XBR48 - Shutting Down For 6
>> Months...Now Dead
>>
>> The description sounds a lot like a HK short in the CRT. Test the CRT
> if
>>
>> possible, check the drivers, drive signal from the jungle, try
>> isolating=20
>> the filliment.....
>>
>> Peter Oliver
>> Tucson Radio TV
>>
>> From: "David" <mr_fixit@xxxxxxxxxxxx>
>> Reply-To: techassist@xxxxxxxxxxxxx
>> To: <techassist@xxxxxxxxxxxxx>
>> Subject: [TechAssist] Sony 35" TV KV-35XBR48 - Shutting Down For 6=20
>> Months...Now Dead
>> Date: Mon, 22 Nov 2004 22:26:25 -0500
>>
>> Customer said TV was shutting down (for no apparent reason) over the
>> last 6 months. Last night=85bright blue screen before shut down. Now =
>> when
>> TV is turned on=85blue screen followed by immediate shut =
>> down=85sometimes no
>> blue screen and only clicking relay is heard. Could this be a
> defective
>> CRT? How can I confirm this? Check the CRT voltages and compare them
>> with and without the CRT board?
>>
>> Thanks in advance.
>>
>> David Lessard
>> Alexandria Electronics
>> mr_fixit@xxxxxxxxxxxx
>>
>>
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