[TechAssist] Re: Sony KV36XBR400 (DX-1A chassis) has black screen with sound
- From: Frank Luu <fkluu@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 21 May 2003 16:20:00 -0700 (PDT)
Phil:
Does the high voltage come up at all?
I assume the primary power supply is running since you
have sound
You have to check secondary supply.
Measure B+ at R6598 (0.27ohm)for 135V. if B+ is low or
0 volt, then measure pin 2 of IC 6501 if it is higher
than 2 volts then oscilator stage IC 6501 area has
problem.
If lower then 2 volts then error regulating state
IC6503/PH6502 has problem.
Frank Luu
AF Electronics
Austin,TX
--- Gemini Computer & TV <geminitv@xxxxxxxxxxxxxxxx>
wrote:
>
> Phil,
> I would suggest you replace the "D" board (part#
> A-1346-948-A). I will
> privately email you a PDF about it.
>
> 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: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, May 21, 2003 1:22 PM
> Subject: [TechAssist] Sony KV36XBR400 (DX-1A
> chassis) has black screen with
> sound
>
>
> >
> > This symptom has been intermittant for quite a
> while says customer.He
> > pushes power, sees the front LED blink but black
> screen.Has sound,remote
> > works (you can enter channels and hear the
> different stations being
> > recieved). After "playing" with the power over and
> over, finally stays
> > on.
> > I turn it on, get the station sound, the front
> stby LED blinks a number
> > of times, then stays on steady.Sound stays OK.It
> does not do the blink
> > sequence over several times,just the once.I
> counted 7 times once,
> > another time I thought it was five. A previous
> post said the fly is
> > often the cause(an open winding). I am sure there
> is no HV to the CRT.
> > I need a starting place.
> > 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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