[TechAssist] Re: Daewoo TV DTQ-29S1FCN CN2001 - Shutdown
- From: <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 4 Dec 2003 14:48:25 -0600
Look for open or changed value of resistor in power supply
I'm thinking it was R812 or R818 something in that area
The one I had would shutdown intermittently
hth
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
Dallas, TX
----- Original Message -----
From: "Premium Technologies" <premtech@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, December 04, 2003 10:26 AM
Subject: [TechAssist] Re: Daewoo TV DTQ-29S1FCN CN2001 - Shutdown
> Dave,
> Usually the replacement of C404, with a 160/3.3 solves a common
intermittent
> shutdown and the resistor across the HOT the thermal runaway per bulletin.
> But this problem may have damaged regulator(s) or supports in that
circuit -
> to the point that resistors may have changed in value. The remainder of
> that bulletin suggests replacement of Q805 (Kse3203), Q803 (Ksc2500),
> Q804(Kse13009), R818 (.33-1w), R806 (390k-1/2w), R812 (100-1/4w). The
> resistors only as needed, but I usually just replace them anyway. And the
> regulators can be substituted...
> Hope this helps.
> Bill
>
>
> William Rayburn, CET
> NESDA Member
> Premium Technologies
> PO Box 442
> Long Beach, WA. 98631
> (360) 642-4993 Phone
> (815) 425-8530 Fax
>
> ----- Original Message -----
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, December 04, 2003 7:56 AM
> Subject: [TechAssist] Daewoo TV DTQ-29S1FCN CN2001 - Shutdown
>
>
> > Hi Fellows,
> >
> > This TV was serviced by another shop for a shutdown problem that occurs
> > after 15 minutes of operation, they never fixed the problem and charged
> > the customer. I've read the emails, changed C404 (to a 3.3uf), added the
> > HOT modification (33ohm B-E), and even changed some other questionable
> > capacitors, still the problem remains. What should be the +B at TP10? I
> > read something somewhere, I think in the TechAssist archive, regarding
> > D401 (9.1V zener) off ABL line on flyback. What else should I be looking
> > for? I don't have a service manual. Thanks in advance. God Bless America
> > (North & South).
> >
> > David Lessard
> >
> > Alexandria Electronics
> > 50 Harrison Street
> > Alexandria, Ontario
> > K0C-1A0
> >
> > mr_fixit@xxxxxxxxxxxx
> >
> >
> >
>
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