[TechAssist] Re: RCA Model# D52W20Byx1 Chassis ITC222 two bars rolling from left to right
- From: Wayne Vanaman <Wayne@xxxxxxxxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 19 May 2005 15:11:34 -0500
Is the set on an isolation transformer? I am thinking about radiating
into the AC line. Try a good surge suppressor/line filter.
Wayne Vanaman
Omega Electronics
6904 W Fairfield Dr
Pensacola, Fl. 32506-3310
Wayne@xxxxxxxxxxxxxxxxxxxxx
WWW.PensacolaTVRepair.Com
850-456-5995 voice
850-458-6369 fax
Moutons Electronics L.L.C. wrote:
> Hello everyone, well this one is going to be a problem. This set has
> 2 white bars along with other disturbances in the picture rolling
> from left to right. It seems to be worse on the low band but is still
> there on all channels. Now for the strange problem. The symptoms seem
> to radiate to all of the other tv's in the shop. It only bothers the
> ones on cable tv if I have cable tv connected to the D52W20. When
> there is nothing connected to the Rf input it only bothers the ones
> on Ant., Cable is fine. I already changed the main tuner and when
> that didn't fix it I swapped the SSB board with another set. When the
> problem didn't travel with the board I figured it has to be on the
> Defection/power board since I disconnected the convergence power
> supple and the problem is still there.
>
> I have scoped the secondary of the run supply and the deflection
> supply and see nothing of importants, nothing more than a volt and a
> half and that was on the 200v supply and less than half vp-p on
> lesser supplies. The horizontal waveform on the collector of the
> output looked good also.
>
> I am stuck and hope someone else has come across this before.
>
> Thanks
>
> Jason Moutons Electronics
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