[TechAssist] Re: ideas needed for a RCA ctc187cn3
- From: "Webster's TV" <webstertv@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 23 Sep 2005 12:42:39 -0500
Roy,
Here's a few tips for a CTC187 for repeated shorting of HOT.
After replacing HOT, TV will play a couple of days and short again, HOT runs
hotter than normal. Replace horiz. driver transformer(#215541) and cap
C4306(#188594), to solve.
Also C4709(47m-50v) can cause HOT to run hot.
Also R4402(#175374) can cause HOT to short intermittantly. (replace even if
checks OK)
Also C4403(#218369) and C4303(#214732) can cause HOT to short
intermittantly.
Also I presume you've checked the horiz. driver transformer for poor solder
connections.
HTH
Dan Webster
Webster's TV
Shullsburg, Wi.
----- Original Message -----
From: <Royal19960@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, September 22, 2005 3:34 PM
Subject: [TechAssist] ideas needed for a RCA ctc187cn3
> Hi all. Looks like a bad week.
> I have a rca f35670mb with a ctc 187cn3 in the shop, again!
> Came in with a squeel, shorted horiz output transistor. Replaced it with
an
> origional from RCA and ran the set over 10 hours, no problem. Cust picked
up
> sat and called right away with the same problem. H output bad again.
replaced it
> along with the timing caps. Set ran againabout 20 hours and then shorted
the
> output again in the shop. Before this happened I looked at the waveform at
the
> output and it looked clean. any ideas?
> Thanks in advance
> Roy
>
> Bonded TV Service
> 5158 W Forest Home Ave
> Milwaukee, WI 53219
> 414-541-9111
> Web hosting from only 4.17 @ month at BondedHost.com
> over 8,000 tubes at Bondedtv.com
>
>
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