[TechAssist] Re: Zenith A50M84W1 severe bow all sides,flipping
- From: Eric Manuel <tvman@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 04 Feb 2006 09:34:17 -0330
Hi Phil some tips here..Eric
9-1690 Poor Convergence Replace IC4008 & IC4009. ICs are Zenith
#223-51, both STK392-110, as well as Resistors R4161, R1460, R4163, and
R4162 all 1 ohm/1/2 watt.
TELEVISION Zenith 9-1690 Poor Convergence R4161 &
R1460 both 1
ohm 1/2W. Check 26V suppy from 9-1674 CR3419 & FX3460 5A
TELEVISION ZENITH 9-1690 convergence r
4160;r4161;r4162;r4163
all 1 ohm 1/2 watt
TELEVISION ZENITH 9-1690 Convergence way off, no control
of
convergence. R4151M (1k SMD) open, off pin 3 of plug 3C8 on 9-1690
convergence module
TELEVISION ZENITH 9-1690 convergence replace R-4160;
R-4161;
R-4162; R4163 all 1 ohm, 1/2 watt
Eric
E M Electronics
59 Wights Rd
Deer Lake NL
Canada
A8A 2J2
Ph# 709 635 2627
tvman@xxxxxxxxxxxxxxx
eric.manuel@xxxxxxxxx
Philip Bader wrote:
> I need your help:
> I had to go look at a 50" Zenith of a friend Thursday night.I sold it to
> him last year as unclaimed for the repair ticket. Turned it on, and I see a
> severly bowed,pulled in rapidly flipping picture. It is so unstable I am
> not sure of it is a comvergence issue.I need advice.
> Model: Zenith A50M84W1
> deflection/power board: 9-1978
> convergence output module: 9-1690-1
> The 9-1690 uses two STK392-110 ICs.
> I don't remember if this symptom is a bad converg 9-1690, and if so, are the
> two STKs bad?
> I am quickly forgetting my symtom/cures. I have my shop computer torn down
> in storage,gave away all my schmatics,etc.
> What do you think?
> Of course I reminded he and his wife I no longer am on open account, have
> sold my parts, given away my diagrams and boxed up my gear. Still "could you
> just look at it?"
> I hurt all Friday from laying on my sides behind it. Oh, I resoldered the
> two STKs and no help. She said it was intermittant.Took 30 minutes,now
> constantly that way.
> Philip Bader
> Polk County School Board
> Electronics Shop, Bartow,Fl.
> (former owner, Jan Phyl TV Inc.,Winter Haven, Fl. from 1976-2006)
> email: pbader@xxxxxxxxxxxxxxx
> phone # given by request
>
>
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