[TechAssist] Re: RCA D52W20, ITC222, Convergence power supply problem

  • From: Bill Grabowski <bgrabowski@xxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Thu, 21 Jul 2005 18:54:46 -0500

It's probably the SSB board the convergence amps are on that board. If 
you change the board out you should either swap the eeprom chips out or 
use chipper checker and and upload all the eeprom data to your PC.I've 
had two of these in the last 6-8 months...............

*****************************
Bill Grabowski
Triangle Appliance
Kenosha,Wi 53142
262-694-6500
262-694-6523 fax
bgrabowski@xxxxxxxxx
*****************************

daryls_tv@xxxxxxx wrote:

> RCA D52W20, ITC222, Convergence power supply problem
> 
> Another looser here.
> Customer claims they changed channels and lost the convergence.
> What I found is no control of convergence and a distorted picture.
> There are no voltages out of the convergence power supply on the secondarie=
> s.
> I do have power on the primary of the smps and does appear to be oscillatin=
> g.
> I checked all of the semi's, resistors and electro's. I ohmed out the switc=
> h mode power transformer. I didn't find any bad components.
> I hope someone has encountered this before and can give a few pointers.
> Thanks,
> Daryl
> Daryl's TV
> 2402 Wyoming Ave.
> El Paso, TX  79903
> 915-565-9184 Voice/Fax
> daryls_tv@xxxxxxx
> www.angelfire.com/tv2/daryls_tv
> 
> 
> 
> --=20
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