TTI TG330 No Amplitude Adjustment

[andybarrett1]

Hi All

Just got my trusty TG330 of the shelf to do a few tests…. And discovered the O/P is stuck at 7.6V no amount of winding the Amplitude control will budge it….. Yes, at this moment in time it is open circuit (No Load) but I would expect some movement.

The display is indicitive of movement (swings 0-21.5v) out but this not replicated on the Output Jacks.

Haven't opened it up yet to look see, but wondered if anybody here had experience of similar issues.

Maybe I not driving it right…. Open to suggestion. The rest of the FG works as is should. 

Thank you for looking !

Andy

 

[andybarrett1]

Just opened it up.... Had a look round.

Whilst on bench started working !!

Usual tapping. Throwing switches etc..... and still works.

Put back together and still working... !!

I have now got the service manual if anyone interested. Thank you TTI !