[TechAssist] Re: RCA PTV Model P46159WK (CTC169PT). Wavey Picture


Check and see if the hv lead gaskets are all installed correctly.
If these are not installed some strange things can be seen in picture.
good luck,Paul
               Quality Electronics.

In a message dated 3/29/02 10:04:37 AM Eastern Standard Time, 
HarrisTV50010@xxxxxxx writes:

> 
>  This unit came into the shop with the complaint that every time you try to 
>  turn unit on you get a loud snap once and it won't come up. I removed the 
>  light box from the cabinet. I found there was a hole in the blue tube 
anode 
>  cup. I pulled the IHVT lead from the splitter and measured the HV. The HV 
> was 
>  erratic jumping fro 30KV to 40KV. I replaced C4401, C4402 in Horizontal 
>  Output stage. I replaced U4101, Q4101, C4118, C4104, C4102 in the 
regulator 
>  stage. I rechecked the HV on the red IHVT lead and it was a steady 30KV. I 
>  hooked it back up to the splitter and it would shut down. I replaced the 
>  splitter as well and it appeared all was working OK and reinstalled the 
> light 
>  box into the cabinet. 
>  
>  Then I noticed some channels had a slight horizontal tearing at the top of 
>  picture but all channels had the problem if there was bright lettering on 
> the 
>  screen the letters were bending and being distorted. On picture without 
>  lettering you would notice off to the right of bright objects there would 
a 
>  slight pull it the picture. On fast moving scenes you would see a slight 
>  wiggle corresponding to the changes in the scene. I did try replacing 
IHVT, 
>  CR4118, Q4802 & the HV splitter the second time. I have spent about five 
>  extra hours on this unit so far and the customer says the problem was not 
>  there before the arcing problem. Does any one have any idea's what the 
>  problem could be? Sorry for being so long winded but I am getting 
frustrated.
> 
>  
>  Thanks,
>  Dale 
>  
>  
>  Dale A. Lubow... HarrisTV50010@xxxxxxx ..515-232-1109..(Fax)515-232-3356
>  Harris TV & Appliance..........335 Lincoln 
>  Way.....Ames.....Iowa.....50010-3384
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