[TechAssist] Re: [Fwd: Sony KPR53EX35 PTV,Has HV,no pic (black)CRTs have filiment vltg.]
- From: "tom lee" <t8872695@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 12 Oct 2001 11:11:15 -0000
Hello .
I have experinece with 3 sony PTV before. Same problem . I adjust the screen
voltage(at screen ,focus block)
3guns. at some level It will activate the E board circuit then the picture
comes out.
Good luck. Dang TVCR
-----Original Message-----
From: Phil Bader <philbad@xxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Friday, October 12, 2001 4:11 PM
Subject: [TechAssist] [Fwd: Sony KPR53EX35 PTV,Has HV,no pic (black)CRTs
have filiment vltg.]
>
>
>
>-------- Original Message --------
>Subject: Sony KPR53EX35 PTV,Has HV,no pic (black)CRTs have filiment
>vltg.
>Date: Fri, 12 Oct 2001 12:15:53 -0400
>From: Phil Bader <philbad@xxxxxxxxxx>
>Organization: Jan Phyl TV Inc. Winter Haven, Fl. Estab. 1976
>To: "CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx"
><CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx>
>
>I submitted this unit to the forums when it came in,but have more info
>now. Customer said it would "shut off" after 20-30 minutes.Wait
>awhile,try again and would work OK,then shut off again. Now,no pix all
>the time.Got schemo (Herman electronics sent me a Sony "sub" manual for
>a 53X30,not exact).The tech troubleshooting this says: Has no pix,but
>has high voltage to the CRTs anodes,looking directly into the CRT shows
>totally black,no illumunation on either three.All three have filiment
>voltage glowing in necks. "G" board: -135V measures -138,+133V meas.
>+133, -15V meas. -23V,+15V meas. +10V, +45V meas. +50V, +115V meas.
>+114.5V. On the convergence "D" board, at plug "D16" measured less than
>2VPP of some kind of signal,the schemo states should be about 100VPP
>vert.not there. He's thinking the Jungle chip IC201 "CXA1012AS" is
>suspect (sony# 875203171). Any input on this appreciated.
>Help make your TechAssist online repair tips
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