F27701BK RCA


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F27701BK RCA

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rob123m
New User

Aug 8, 2005, 4:49 PM

Post #1 of 4 (1546 views)
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F27701BK RCA	Can't Post

Hello

I took this unit on as a challenge,boy it is turning out to be one.Before I give up on it,

I am asking for advice.What I am running into is the main ceramic resistor is blowing right

off the bat.(15w 2.7 ohm).As soon as I plug the power cord in,with nothing hooked up,just the

power switch. I have changed a bad cap I found,also Q4401,Q4101,U4101,CR4122,C4102.

Thanks For Any Suggestions Rob

rob123m@yahoo.ca

mel
Veteran

Aug 8, 2005, 9:56 PM

Post #2 of 4 (1535 views)
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Re: [rob123m] F27701BK RCA [In reply to]	Can't Post

probably a shorted diode in the bridge rectifier in the main power supply.

rob123m
New User

Aug 10, 2005, 5:28 PM

Post #3 of 4 (1526 views)
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Re: [mel] F27701BK RCA [In reply to]	Can't Post

Hello Mel

I just wanted to say thankyou for the suggestion,I did check them,meter says okay,

so I changed them just in case.Same thing,so parts machine it is.

Thanks for the help Rob

rrobor
Veteran

Aug 13, 2005, 8:27 AM

Post #4 of 4 (1514 views)
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Re: [rob123m] F27701BK RCA [In reply to]	Can't Post

If the chopper transistor is not short it will be the degauss PTC, Just remove it and try again, or remove it and give it a shake, if it rattles its faulty.

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