Quote Originally Posted by Firebottle View Post
It might be the high voltage block, they are known to 'sag' over time. Sometimes one or a few of the individual rectifiers fail, so you end up with a lower voltage than should be.

The treble panels should have about 1500V on them and the bass panels about 6000V on them. If the voltages are low you do still get some output but dependent on the voltage level.

To measure these voltages you need a very high resistance probe to connect to a multimeter, otherwise the measuring kit can pull the voltage down.
I have a self made high resistance probe that you are welcome to borrow if you feel confident to use it.
Hi Alan

Too Technical for me i am sending them in on Sunday to be Professionally looked at...

Keep the offer in mind if my technician needs it...