[TechAssist] Re: Zenith SR3547 hv,filaments no raster no sound
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 01 Mar 2005 07:06:56 -0500
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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ZENITH 9-1270
Raster No Go - No Pix, Video, Or H.V. Sound Ok. Had A Line Down The Middle
Before It Quit.
Robinson Electronics
Replace Shorted Hot Qx3208 "1148-01", Replace Pigtail Fuse Fx3403 "3a.
250v.".
Resolder (Bad Connection) On Lx3262 - Caused The Hot To Fail & Fuse To Open.
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ZENITH 9-1270
Shutdown, Intermttent, After Replacing Flyback, Part # 95-4134-09
Marshfield Tv
Flyback Part # 95-4134-09. Called Tech Assist At Tri-State, They Supplied
The Flyback, Zenith Said Discontinued. They Said Change Crx3204 From 9.1v
Zener To 12v Zener. Diode Located Near Qx3201, Towards Front/Center Of
Board. That Cured It.
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ZENITH 9-1270
Shutdown, Intermttent, After Replacing Flyback, Part # 95-4134-09
Set Came In With Sound, No Raster, No B+ On Hot. Found 130v Fuse Open, Rang
Fly Was Bad, Replaced Fly (95-4134-09) With An Aftermarket From Tristate
Module
Hv Came Back, Would Shutdown After A Minute Or So. Noticed Pincushion
Problem. Replaced Qx3201 And Solved Pin Cushion, But Still Shutdown. Pix
Was Snowy. After Bypassing Rf Switcher With No Results, I Replaced Tuner
(175-2400), Pix Was Great Still Shutdown
Was Losing Horiz Drive,. Solution Was To Parallel A 12k Resistor Across
Rx3209, Which Solved Problem. Apparently Aftermarkets Have A Discrepancy
In Sampling Windings
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ZENITH 9-1270
No Video . Has Good Audio.
John A1tv 3-17-00
Solder Bad At Ic 3402(Close To Smps Transformer) On Sweep Brd Solder Bad At
Large Diode Next To Smps Transformer(Pcb Kinda Burnt Too
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ZENITH 9-1270
Horizontal Deflection Intermittent
Jeff Stielau : 7/9/01 : Shoreline Electronics
Cracked/Burnt Solder Connection On Coil Lx3202. Located On Back Right Corner
Of Sweep Pc Board
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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: "repair11" <repair11@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, February 28, 2005 8:41 PM
Subject: [TechAssist] Zenith SR3547 hv,filaments no raster no sound
> Zenith SR3547
>
> Set came in with shorted hot and Ihvt, and 130 v B+ fuse blown. Replaced
> IHVT (95-4534-11),hot, and fuse, Set fires up HV, filaments, no
raster,even
> with G2 at max, no audio, changed the 2 110k resistors,no change. A print
or
> some suggestions would be greatly appreciated.
>
>
> Charles Betzler
> Best Electronics
> repair11@xxxxxxx
>
>
>
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