TFM-55x cuts out at low to moderate volume levels

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johnsearchwell
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TFM-55x cuts out at low to moderate volume levels

Post by johnsearchwell » Wed Dec 31, 2008 11:14 am

I am pushing a pair of Polk RTi12 with a Carver TFM-55x power amplifier and a Carver CT-29v preamplifier. The problem is that when I initially turn on the system it plays at low to moderate volume levels, but cuts out intermittently for about five to ten seconds at a time. This stops after about a half hour or once the amp warms up. Does anyone have any idea as to what the problem is or what I can do to remedy it?

Thanks,
Johnsearchwell

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OBI56
SILVER-7 TUBE AMP
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Re: TFM-55x cuts out at low to moderate volume levels

Post by OBI56 » Wed Dec 31, 2008 11:36 am

Hi John, this is the wrong area of the forum to be asking such a technical question in (it is usually for introducing yourself to fellow forum members). You will receive more attention if you repost this in the Repairs section where the technical type people who might know how to fix your problem hang out. the only other people who regularly hang out in this section of the forum are the welcome wagon .... O:)
Why let facts or common sense get in the way of your opinions.

Konakanedog
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Re: TFM-55x cuts out at low to moderate volume levels

Post by Konakanedog » Wed Feb 11, 2009 1:03 am

Hi John Any news /answers to your Carver TFM cutting out? Seems I have the same problem with mine. Only cuts out for a fraction of a sec though when volume is asked for! On return it hits hard! My Amp is a TFM 45 I also have a bulging cap ! So it is sitting on the bench waiting new caps and parts to bring it back.
I have been told a recap is in order for mine. I am sure their is a list of parts to replace on these aging High power amps to bring up to spec and return reliability! Dirty or faulty relay can cause cut out? Then bias and bench. Checking DC V is always a good start. I will have to wait for a Service manual as i look for answers. Good luck with yours!.

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engtaz
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Re: TFM-55x cuts out at low to moderate volume levels

Post by engtaz » Wed Feb 11, 2009 5:07 am

Welcome Konakanedog
engtaz


Carver M4.0T in front channels to Caver AL VI's in SACD & 2 Channel setup
C 16, PT 2400, Slim Device, Carver TX-8, 490T and Rega TT w Grado Gold cart in the 2 channel setup
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anatech
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Re: TFM-55x cuts out at low to moderate volume levels

Post by anatech » Sun Feb 22, 2009 11:14 pm

Hi johnsearchwell,
While playing at low volume, lightly tap the two relays at the rear of the PCB. Use a plastic object like a dry toothbrush. One relay is very close to the AC filter, careful you don't get a shock!

Anyway, you may be able to get the sound to cut in and out. If that is the case, replace the speaker relay(s).

-Chris
You did what???!

Konakanedog
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Re: TFM-55x cuts out at low to moderate volume levels

Post by Konakanedog » Mon Feb 23, 2009 3:46 pm

Hello Hello Hello tap tap tap Is this thing working? John are you there?

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