[TechAssist] Re: RCA Model# D52W20Byx1 Chassis ITC222 two bars rolling from left to right
- From: Jim Myers <jr.myers@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 19 May 2005 15:15:48 -0500
Check all the HV wires and be sure they are seated into the FBT and
splitter properly. If not seated the can become a RF transmitter.
********************************
Since 1972 *
Jim Myers *
Telrad Electronics *
Fort Wayne Indiana *
********************************
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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