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RCA TV (32" pic) F32676SB, ch CTC197CD Standby Voltage?
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Brad
electronics forum addict


Joined: 01 May 2005
Posts: 76

PostPosted: Tue Jul 18, 2006 8:55 pm    Post subject: RCA TV (32" pic) F32676SB, ch CTC197CD Standby Voltage? Reply with quote

Hi,

I have a RCA (32" picture) TV model F32676SB, ch CTC197CD
(mfg. 12/96) in my shop that shuts off right after turn on. I can hear
HV at turn on. The regulated B+ is 151V in standby.

Using a 250 ohm dummy load, the B+ voltage drops to 141.5V. I do
not have a SM for this set. Is the standby voltage too high?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active keystroke logger (spyware) in your PC.
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Jason D.
electronics forum Guru Wannabe


Joined: 06 May 2005
Posts: 196

PostPosted: Wed Jul 19, 2006 3:42 pm    Post subject: Re: RCA TV (32" pic) F32676SB, ch CTC197CD Standby Voltage? Reply with quote

On Tue, 18 Jul 2006 20:55:13 GMT, bpetria@verizon.net (Brad) wrote:

Quote:
Hi,

I have a RCA (32" picture) TV model F32676SB, ch CTC197CD
(mfg. 12/96) in my shop that shuts off right after turn on. I can hear
HV at turn on. The regulated B+ is 151V in standby.

Using a 250 ohm dummy load, the B+ voltage drops to 141.5V. I do
not have a SM for this set. Is the standby voltage too high?

Thanks in advance, Brad

Take your scope probe and let body of probe lean on the flyback's body
with 50uS/div & .1 V/div. Turn the tv on. If the waveforms looks
weak and noisy, Time for new fly. Fairly common.

That assume you have checked all the diodes for this flyback on
horizontal & outputs.

Cheers, Wizard
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