[TechAssist] Re: fix: Zenith B36A24Z , 9-2069 master. "was fixed for storm damages, now all red"

Phil,
     Not to my knowledge....Those resistors open on a lot of Zeniths, all
screen sizes... We usually replace all three 120K if one opens..
Bob.

Bob's TV    Worcester, ma

woodman17@xxxxxxxxxxx



----- Original Message ----- 
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, May 31, 2005 12:02 PM
Subject: [TechAssist] fix: Zenith B36A24Z , 9-2069 master. "was fixed for
storm damages, now all red"


> Zenith 36 inch model B36A24Z, 9-2069 master module.
> The customer said this came from one of the furnature store chains. It
> was returned to their service dept. supposedly repaired.(details vague)
> I noticed the main filter cap was replaced (470ufd@250V) and there was
> brown stain underneath.(Maybe 220VAC line voltagedamaged?) Customer said
> later went all red. Customer claimed it was storm related.
> CRT tested good with good RGB gun balance. I checked the CRT module. I
> found the *following resistors* *open*:
> R5126, 220K
> R5103,R5110,R5119 all 120K.
> (BTW there is a 3 volt zener, D5101 on the CRT board that my Fluke
> 75III meter tested  reverse leakage on diode test. Diode is good, Fluke
> technical said this is due to the meter's test voltage between the
> probes, and the low zener voltage. Read 1.5 reverse in diode test, .7
> forward. Diode was found to be OK)
> These resistors repaired the TV and restored good picture.
> Question: Does a surge ever cause these resistors to open?
> 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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