[TechAssist] Re: CTC-177CN power supply buzz
- From: "Barry Thompson" <barrystv@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 18 Jun 2003 23:38:48 -0400
If your B+ is going over 200 volts in standby and you have a squeal Change
both C4123 and R4125. you should have about 149 volts in standby,141volts
running. You will also have jagged sides when is running.
barrystv@xxxxxxx
Barrys TV
613 224 3406
Ottawa.Canada.
----- Original Message -----
From: "Tri-County Tv" <tricountytv@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, June 18, 2003 9:14 PM
Subject: [TechAssist] CTC-177CN power supply buzz
> Good evening,
> I have this 31" rca model F31671SE chassis ctc177cn ,
came in dead, replaced U4101 (STK-730-010) with a new one but unsure of
where it came from, does not appear to be counterfeit, but after installing
this ic the set comes on fine, then in about 5 min the picture gets wavy
lines in it and eventually the picture goes in and out. When the TV is off
raw 15volt source goes from 15 volts to 20 volts and the b+ goes from 140 to
212 and then you hear the buzz, turn the set on and the voltages go back to
normal until you turn it off again. Has anyone seen this problem before or
anything close to it?
> Tom Berger
> Tri-County TV
> Robbinsville
> North Carolina 28771
> (tricountytv@xxxxxxxxxxxxx)
>
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