[TechAssist] Re: bad again!,Sanyo DS25330 unusual symptom/fix for dead set,R409 ID?
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 8 Nov 2004 18:06:40 -0500
I believe R409 is in the horizontal drive circuit and is a 100 ohm, 2 watt.
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@xxxxxxxxxxx
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, November 08, 2004 11:10 AM
Subject: [TechAssist] bad again!,Sanyo DS25330 unusual symptom/fix for dead
set,R409 ID?
> Thought I fixed this problem with the STR30130 IC.(see original thread
> below)
> Ran all day. Turned it off, then tried to turn it on. No go. Same issue
> as before. Dead. I am replacing C007 (4.7@160V) and R005 (220K) both ib
> the PS near the str30130. Maybe they go bad under load, or warm.
> I also have a 2 watter R409 I pulled and need to check:. Reads about 7K
> but I need it's value.
> Thanks.
> Phil Bader
>
> Phil Bader wrote:
>
> >Originally set was said to be dead after storm. Tho it powered up OK on
> >the bench, there were many,many bad solder connections and overheated
> >areas of the board. Thoroughly resoldered, tested, and sent home.
> >Customer said it never did run at home after repair. Customer returned
> >it. Plugge it in. Ran good immediately. Powered on with my remote
> >(customer has none) and with the front power button OK.
> >I plugged it into the power strip on the test area and dead. Plugged it
> >into my Sencore PoweriteII PR570 isolation transformer , and also dead.
> >Even tried increasing/decreasing the line voltage.No help.
> >Plugged it back in on the bench, works!
> >Here's the thing:
> >My bench uses a single outlet 1:1 isolation transformer that I always
> >plug in the TV under test. The set WORKS with that isolated outlet.
> >Plugging in direct into the UN-isolated power strip next to it DOES NOT
> >let it power up. My Sencore PR570 DOES NOT let it power up.It's
> >isolated! Only my small 1:1 isolation transformer at the bench lets it
work.
> >I replaced the STR30130 regulator, and problem cleared. Fixed! Note: The
> >old str30130 outputted exactly +130 volts DC with perfect picture.
> >Now I would understand it working with the isolation and not the direct
> >wall outlet,(leakage) but wouldn't even power on with my Sencore
> >isolation unit. Strange.
> >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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