[TechAssist] Re: Zenith TV Z35X21D - Dead/Intermittent
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 8 Dec 2003 15:37:42 -0500
David replace the two caps in the power supply, check all the resistors,
replace the transistor, and the STR IC. That has been the parts I've been
replacing.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, December 08, 2003 1:52 PM
Subject: [TechAssist] Re: Zenith TV Z35X21D - Dead/Intermittent
> I just got back from the customers home. CX3416 checked good, replaced
> it anyway. Qx3401 shorted C-E, front popped off. RX3406 burnt (beyond
> recognition). Not sure if ICX3431 is dead, main fuse is still intact.
> Does anyone have a good one kicking around so that I may compare pin to
> pin readings? Is it possible that ICX3431 is still functional? How could
> I check this? Thanks in advance.
>
> David Lessard
>
> Alexandria Electronics
> 50 Harrison Street
> Alexandria, Ontario
> K0C-1A0
>
> mr_fixit@xxxxxxxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Bob@Bobs tv
> Sent: Monday, December 08, 2003 12:49 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Zenith TV Z35X21D - Dead/Intermittent
>
> David,
> When you first check the set, with set off check for 130V at the
> collector of horizontal output.. {I use tuner ground} if its there. The
> 22uf
> and 100uf in the power supply should take care of this.. If the 130V is
> missing you have other problems. Listed below are most common faults
> CX34123 22uf/63
> CX3416 100/25>>>sub to at least 50V
> RX3404 180K 1/2W
> QX3401 121-3401
> IXC3431 223-28
> If you want me to send a JPEG of power supply let me know..
> Bob,
>
> Bobs TV Worcester, ma
>
> woodman1@xxxxxxxx
>
> Main 508-853-1482
> Fax 508-853-1480
> ----- Original Message -----
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, December 08, 2003 11:55 AM
> Subject: [TechAssist] Zenith TV Z35X21D - Dead/Intermittent
>
>
> > Gentlemen,
> >
> > I need to gather components before visiting this sick TV. Customer
> > indicates TV was intermittent before finally failing altogether. When
> > intermittent shutdown did occur, shutting off the TV for 30 minutes
> > would allow it to fire back up. This sounds like a capacitor acting up
> > but which one(s) and now that the TV is dead - dead, what else should
> I
> > bring on this job. God Bless America (North & South). Thanks in
> advance.
> >
> > David Lessard
> >
> > Alexandria Electronics
> > 50 Harrison Street
> > Alexandria, Ontario
> > K0C-1A0
> >
> > mr_fixit@xxxxxxxxxxxx
> >
> >
> >
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