[TechAssist] Re: FIXED: Toshiba TP55D80 - convergence issue
- From: "KenyD" <ken.dyche@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 3 Jul 2003 11:46:10 -0400
Well, I guess I should go back to high scholl electronics class. I had a
brain fart on this one. I tested all the 2.7 ohm resistors at the house,
and one read 2.2. I figured it was in circuit so I gave it some tolerance
and considered it good. After bringing the set into the shop, and got your
advice and read the Toshiba bulletin, I removed them from circuit and
changed the one that was 2.2. It fixed the problem. Next time I'll know
better.
Thanks everyone!
Ken Dyche
Mississauga T.V. Inc. (est. 1952)
Mississauga, Ontario
Canada
----- Original Message -----
From: "tony saracco" <tcselectronics@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, July 02, 2003 10:20 PM
Subject: [TechAssist] Re: Toshiba TP55D80 - convergence issue
> Remove the 6 2.7 ohm 1/2 resistors next to the stk chips and check there
> value . any that are below 2.7 ohm replace ( bad ones usually read 2.2
~1.7
> ohms.)
>
> Tony Saracco
> TCS ELECTRONICS
> Elgin , IL 60120
> 847-695-1928
> tcselectronics@xxxxxxxxxxxxxxxx
> ----- Original Message -----
> From: "KenyD" <ken.dyche@xxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, July 02, 2003 4:20 PM
> Subject: [TechAssist] Toshiba TP55D80 - convergence issue
>
>
> > We were called into the house on the unit for a convergence problem.
> > Assuming it was going to be a simple STK issue, we brought them along
with
> a
> > bunch of 2 and 3 watt resistors. The problem is specifically with the
> BLUE
> > HORIZONTAL convergence. There is a slight linearity problem and minor
> > pincushion prob (bowed in) on the left and a major pin prob (bowed in)
on
> > the right.
> >
> > So we went ahead and changed the STK's, checked all the power resistors
> (all
> > were good) and checked the set...what else would you expect...same
fault.
> >
> > Nobody has tampered with the front pots and adjusting them doesn't give
> > enough range either. Does anyone have any ideas?
> >
> > Thanks in advance;
> > Ken Dyche
> > Mississauga T.V. Inc. (est. 1952)
> > Mississauga, Ontario
> > Canada
> >
> >
> >
>
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