[TechAssist] Re: working. Toshiba 50H82 , TAC0263 dead, "click",power LED only
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 14 Mar 2005 10:15:38 -0500
Well I find many "JP" jumpers on the top, but they are not marked on the
bottom where you would look. can't locate "010", but I did solder most
all that area.
Phil Bader
Phillip R. Hull wrote:
>Resolder jumper 010 in front of (back) convergence IC or fuse will blow
>again. check all jumpers in that area
>Phillip R Hull STET
>phil245@xxxxxxxxxxxxx
>FAX 517--569-3075
>Professional Technicians only
>----- Original Message -----
>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Friday, March 11, 2005 5:16 PM
>Subject: [TechAssist] working. Toshiba 50H82 , TAC0263 dead, "click",power
>LED only
>
>
>
>
>>Oh, great! I just did a few tests:
>>I jumpered F470 with a 60 watt lamp. it powered on (no pix) and lamp
>>softly glowed. I removed lamp across F470 and soldered a 2A pigtail
>>fuse. Unit powered on normally with good picture now. I can't see a bad
>>CRT showing such good picture.And a shorted CRT obviously wouldn't.
>>Customer described the picture as once dark, another time too bright and
>>shut off except the sound. Sounds like I got an intermittant issue here.
>>Phil Bader
>>
>>Philstv@xxxxxxx wrote:
>>
>>
>>
>>>I had the same problem on this chassis (42H82) and replaced the F470. The
>>>
>>>
>set
>
>
>>>came back two weeks later (today) with a different problem. It comes one
>>>
>>>
>with
>
>
>>>a washed out picure and then shuts down. I disconnected the filament line
>>>
>>>
>and
>
>
>>>it stayed on. I also disconnected the plug feeding video and the 9 volt
>>>
>>>
>line
>
>
>>>to the CRT boards and it stays on.
>>>Disconnecting the CRT sockets and anode leads let the set stay on. If I
>>>connect more than one CRT panel to the tubes, the set shuts down. It will
>>>
>>>
>run with
>
>
>>>just one CRT connected, but will shut down with two or three and it
>>>
>>>
>doesn't
>
>
>>>matter which two.
>>>
>>>I also disconnected the convergence and deflection yokes and that changed
>>>nothing, the set still shuts down.
>>>
>>>Phil Solarz
>>>RAC - National Product Service
>>>Phil's Electronics
>>>C.E.T. GNN3799 - FMIC
>>>734-718-0301
>>>
>>>In a message dated 3/11/2005 4:31:02 PM Eastern Standard Time,
>>>tjanphyl@xxxxxxxxxxxxxxx writes:
>>>update:
>>>I found a pico fuse open, F470 (2A). This fuses a main +120V source that
>>>goes a lot of places, like the HOT/Flyback, all three SVM modules. The
>>>HOT is good. I don't think a bad fly would leave Q404 HOT undamaged. I
>>>removed the power/defl board,I find no shorts on this line so far. Will
>>>keep looking.
>>>Phil
>>>
>>>Phil Bader wrote:
>>>
>>>
>>>
>>>
>>>
>>>>Well, this is from a smoker. Stains inside on the boards, the dust is
>>>>brown and gets all over you. Nasty.
>>>>Customer said at first, the picture brightness was dim, then would get
>>>>very bright and shut down except the sound worked. She is not technical
>>>>at all, so I take this in consideration. I checked the power/defl board.
>>>>Two power devices, D461 (diode, looks like a HOT on a sink) seems OK,
>>>>and a HOT Q404 tested OK. Four pico fuses near the front,
>>>>F850,851,852,853 all test OK in circuit. Nothing visable. I plug it in,
>>>>can hear a quick double click from a relay at rear. I then push power
>>>>with the remote and a click, a low audio thump thru speakers, nothing.
>>>>So, the standby supply is running to recieve the remotes' on command.
>>>>Searched my archives and techrepair CD with no results.
>>>>Anyone have experience with this chassis?
>>>>Thanks,
>>>>Phil Bader
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>--
>>
>>Philip Bader
>>Jan Phyl TV Inc. (estab. 1976)
>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>Fax (863) 299-8821
>>email: tjanphyl@xxxxxxxxxxxxxxx
>>
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--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
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