[TechAssist] Re: Daewoo DTQ-26S1FC chassis CN-2001 Dead- Hydro surge
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 2 Oct 2003 07:21:06 -0400
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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DAEWOO DTQ26S1FC
Dead
The Service Bulletin Notes For The Regulator Circuit Said To Check The
Following Out Of Circuit: R818 (.33 Ohm 1w), R806 (390k 1/2w), R812 (100 Ohm
1/4w).
Failure On These Are Highly Possible Due To Thermal Runaway. Then Test
Q805, Q803 And Q804. To Test You Might Remove Q402 (Hot), And Use A
25w-120v Bulb Across The 103vdc And See If It Flashes.
Replace C404 1mf-160v With A 3.3mf-160v No Matter What, And Place A 33 Ohm
1/4w On Q402 Between Base To Emitter. In My Fix I Had To Replace Q402, And
Then Added The Resistor.
The Notes I Have For Crossing These Are:
Q402 - D1880 - Nte 2353 (Hot)
Q803 - C2500 - Nte 2363
Q804 - E13009-2 - Nte 379
Q805 - C3203 - Nte 382
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DAEWOO DTQ26S1FC
Dead No Power Up
Computer & Comm Solutions Www.Ccsinc.Com 804-642-9731
Q803 C2500 R/W Sk9453, Q804 E13009 R/W Sk10000, Q402 2sd1880 R/W 2sd1879,
Q805 C3203 R/W C3203 C404 1uf@160v Had Bad Esr
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DAEWOO DTQ26S1FC
Dead No Power Up (All Smps Components Check Good !)
Bay Electronics Inc.
Remove R807 (47 Ohm) Scrape Leads Reinstall Or Replace R807 The Unit I Fixed
Had An Invisible Bad Joint There Due To Overheating.. What A Dog !
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DAEWOO DTQ26S1FC
Dead.
Ford's Tv & Video Service
Open Capactor, C404 (1 Uf 160v), Shorted Transistor, Q803(2sc3203),
Defective Transitors, Q805 (2sc2500), Q804 (E13009-2), Q402 (2sd1880), Open
Resistor, R815 (0.33 Ohm 1 W).
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DAEWOO DTQ26S1FC
Dead.
Ford'S Tv & Video Service
Open Cap, C404 (1uf 160v), Shorted Transistor, Q803(Ksc2500), Defective
Transistors, Q805(Ktc3203), Q804(Kse13009), Q402 (2sd1880), Open Resistor,
R818 (0.33 Ohm 1 W)
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DAEWOO DTQ26S1FC
Dead. No Chirp When First Plugged In. Stand-By Not Running.
Mdelectron@xxxxxxx
Q805 (2sc3203). May Check Good But Won'T Start Stand-By Supply.
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DAEWOO DTQ26S1FC
Regulator problems
Robert Ford
check parts out of ckt: R818 .33-1w, R806 390k-1/2w, R812 100-1/4w,
Q805,Q803,Q804. to test remove Q402 (hot) and put 120v 25w bulb across the
103vdc supply
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Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "Warren C." <warrenca@xxxxxxxxx>
To: "techassist" <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, October 01, 2003 11:38 PM
Subject: [TechAssist] Daewoo DTQ-26S1FC chassis CN-2001 Dead- Hydro surge
> Set came in dead possibly after a hydro surge? / lightning?
> Fuse good, Main parts test ok on initial check
> Does anyone have a schematic??
>
> TIA
>
> Warren Campbell
> Campbell,s TV & Appliances
> Cannington Ont
>
>
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