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

Dale,

I agree with Albert regarding seating of the HV leads into the splitter
and the gaskets, but if that is OK, check the PIP module.  Have seen
several where the rubber bumpers intended to isolate the circuit board
from the shield have turned to goo--like melted chocolate.

Clean the board thoroughly and check the electrolytic caps for leakage
and high ESR.  I found 8-10 bad.

One of the sets I found with this problem had exactly the same problem as
yours--arcing at one of the crt's.  After that was fixed, we found
quivering and streaks as you described.  Lost LOTS of time thinking it
was something we had done.  After all, the customer never lies and would
have told us of another problem they had before it failed completely. 
WRONG!

Hope this helps,


Ken Smith
Gulf Technical Services
3034 Gulf Breeze Parkway
Gulf Breeze, FL  32563
850-934-8324 (Voice) 850-932-0819 (Fax)


On Fri, 29 Mar 2002 15:16:33 +0000 "albert vasquez"
<albertv29@xxxxxxxxxxx> writes:
> 
> I had similar problems with a unit and found that one of the little 
> gaskets 
> for the hv leads had fallen off.Make sure you have all the gaskets 
> in 
> place.HV leak will affect your pic in this way.Hope this helps.I 
> know how 
> you feel.
> Albert Vasquez
> Orion services
> Victoria tx
> 
> >From: HarrisTV50010@xxxxxxx
> >Reply-To: techassist@xxxxxxxxxxxxx
> >To: techassist@xxxxxxxxxxxxx
> >Subject: [TechAssist] RCA PTV Model P46159WK (CTC169PT). Wavey 
> Picture
> >Date: Fri, 29 Mar 2002 10:00:51 EST
> >
> >
> >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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> 
> 
> 
> 
> Albert vasquez
> Orion services
> Victoria Tx 77901
> 361-574-9280
> 
> 
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