[TechAssist] Re: Zenith IQB50M90W converg prob. Hitachi Guts??
- From: daryls_tv@xxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 06 Apr 2005 16:07:48 -0600
Zenith projo model
IQB50M90WA
IQB55M90WA
IQB60M90WA
RB60M90WA
Here are the equivalents.
This is the ZP-90R Zenith Chassis designation.
It's based on the AP-90R Hitachi Chassis.
Different Micro.
Analog Convergence
Speaker Matrix
Hitachi AP-90R Model 46FX01B
Daryl's TV
2402 Wyoming Ave.
El Paso, TX 79903
915-565-9184 Voice/Fax
daryls_tv@xxxxxxx
www.angelfire.com/tv2/daryls_tv
----- Original Message -----
From: "walter wood" <wwood_38478@xxxxxxxxx>
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Zenith IQB50M90W converg prob. Hitachi Guts??
Date: Wed, 6 Apr 2005 12:19:02 -0700 (PDT)
>=20
> This is indeed a Hitachi set.
> Winstips only convergence tip is a bad
> connection(trace) from the flyback to Q902, the 27v
> regulator.
> Voltages you should expect on the convergence ic's
> are:
> Pin
> 1 0
> 2 0
> 3 -31
> 4 -32
> 5 +33
> 6 0
> 7 0
> 8 +28
> 9 1.0
> 10 +27
> 11 0
> 12 -28
> 13 0
> 14 0
> 15 0.2
> 16 0.3
> 17 -28
> 18 0.3
> If someone can remember the Hitachi chassis no.
> that corrospends the schematic could be downloaded
> from their website.
> I had that info at Future tech, but don't remember,
> and no longer have access.
> HTH
> Walter
> --- Larry E <videotech@xxxxxxxxxxxx> wrote:
> > Hi Guys, went out on this IQB50M90W, ZP90
> > chassis for a complaint of poor
> > convergence and it has Hitachi boards in it, all
> > green led`s are lit, red protect led
> > is not blinking, replaced both STK`s, made no
> > difference, I must be missing a voltage
> > to the IC`s but I`ve never seen this set-up
> > before so I`m going to need a little
> > help, any ideas ? tia, Larry E
> > Larry Eastman
> > American TV & Electronics
> > Crystal River, Fl. 34428
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>=20
> Walter Wood
> United TV Service
> 501 Poplar St.
> P.O. box 602
> Pulaski Tn. 38478
> mailto:wwood_38478@xxxxxxxxx
> -------------------------------------------------------------------------=
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--=20
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