[TechAssist] update. RCA 61" hdtv P61310, DTV307GA, fans "kick" once, otherwisedead]
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: "techass >> \"techassist@xxxxxxxxxxxxx\"" <techassist@xxxxxxxxxxxxx>
- Date: Tue, 18 May 2004 09:44:45 -0400
-------- Original Message --------
Subject: RCA 61" hdtv P61310, DTV307GA, fans "kick" once, otherwise dead
Date: Sat, 15 May 2004 11:06:13 -0400
From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
I checked the DMA Power supply board and the two 4700mfd caps .Caps
tested OK. I noticed as I powered it on, looking inside in the back, as
it would do the cycling, I saw an arc from up under the CRT area each
cycle.
opened the front panel where I could see the bottoms of the CRT necks
and CRT boards.
The CRT on my right had the neck hanging!
I can see a black arc line around it at the bell where it appears to
have arced until it burnt through the glass neck!. CRT is toast. Don't
know what else.
Question:
Can I isolate this bad blue CRT by unplugging it's anode from the block,
and unplug the CRT board, so I can power the set and see if the other
two CRTs are OK, and I have HV,etc? What's the safest way?
Will keep posted.
PS: another tech advised on the DMA power supply (upright one above
sweep) to just change caps C14113,C14115 (use# 250729), and diodes
CR19710 and 13 with #234048. High failure rates, tho not my problem here.
Phil Bader
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Phil Bader wrote:
>
> A newer chassis.
> RCA 61 inch HDTV. model P61310, chassis DTV307GA.
> No picture, no sound.
> I notice there is an "access card" in a slot in the rear, I assume a
> built in satelite tuner assy.
> Customer is an office equipement tech, and says it has two 24 volt
> fans that seem to "kick" once, but do not start up. The set is
> otherwise dead.
> When I plugged in the cord, I heard the "chirp" of what I assume is
> the power supply.
> Pushed power button: Green light comes on and stays green constantly.
> No other response, other than a strange sound coming from the lower
> right side of the set (facing the set's screen), best described as a
> half-second "Gurgle" recurring steadily every one second.
> Could use ANYTHING on this: pdf's, bullitens, histories, common
> hi-failures, anything!
> 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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