[TechAssist] Re: RCA CTC187CL horz freq shift causing shutdown
- From: "Jerry" <geiting@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 23 Aug 2003 18:07:43 -0400
Peter,
I believe your referring to the horizontal free run frequency. If it is
set to low, the set will shutdown. Replacing the eeprom will correct this,
but of course, you will have to realign everything. Reinitializing the
eeprom with chipper check will NOT correct this. But it is possible to
start the set by parelling a 2000pf or so cap with the large cap off the
HOT. Sorry, I'm at home, and don't remember the symbol #. Also, if this
set has pin correction (small pc board attached to the HOT heatsink), you
have to be careful about the size of the cap used, so as not to imbalance it
too much. Then you can start the set, access the service menu and adjust
the first parameter to at least 10. If you need more info, I can look this
up for you monday.
Jerry Eiting geiting@xxxxxxxxxx
Christians Electronic Service
Piqua, Ohio
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, August 23, 2003 5:44 PM
Subject: [TechAssist] RCA CTC187CL horz freq shift causing shutdown
>
> RCA CTC187CL
> in 31"
>
> Sorry for the obscure post, but rembered this one just
> after I left the shop this afternoon. It appears that the horizontal
> frequency is shifted causing possibly excessive high voltage and
> shutdown---- this is a qualitative assesment by ear, also the screen is
> keeping a pretty good charge that is slow to bleed off. Is there a way to
> shift the frequency so that the set will turn on without replacing or
> initializing the eeprom?. Set will stay on with the horizontal yoke plug
> pulled Tuner has been repaired and horz drive connections reworked too.
>
>
> Peter Oliver
> Tucson Radio TV
>
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