Sony Vfet pt2 problems

[Antealta]

Hi

have some problems with my vfet,suddenly it lost all power, can hear faint sound when volume to max, same level in both speakers.

it´s not the source or preamp, using them with my f6 now.

i measure the power into the output stages be 33.somthing volt , shouldn't that be 36volt, can this be the meanwell power supply is gone bad

Andreas

 

[Golyd]

Hi, does the amp turn on and draw current as normal or is it completely dead/cold?

 

[andynor]

Hi

have some problems with my vfet,suddenly it lost all power, can hear faint sound when volume to max, same level in both speakers.

it´s not the source or preamp, using them with my f6 now.

i measure the power into the output stages be 33.somthing volt , shouldn't that be 36volt, can this be the meanwell power supply is gone bad

Andreas

Pics please.

 

[Ylab]

i measure the power into the output stages be 33.somthing volt , shouldn't that be 36volt, can this be the meanwell power supply is gone bad

I have about 34V after the RC at the power amp board on mine.

 

[Antealta]

Hi, does the amp turn on and draw current as normal or is it completely dead/cold?

the amp turns on just fine, i have measured it, the voltage between ground and the irf 250 measured to 14 volt, just near silent.

 

[Ylab]

Maybe the relay that short the positive speaker terminals is stuck? Look for a short between the + and - speaker terminals

 

[Antealta]

I have about 34V after the RC at the power amp board on mine.

Ok

maybe my relay is stuck to ground ….

 

[Ylab]

Or your second switch that seem to switch the relay is defective ?

 

[Antealta]

phuu back in business yes the realy was stuck thanks everyone. 😂😅😅😅

Andreas