Dynacord PowerMate 1000-2

[egiux]

Hi all, I have Dynacord PowerMate 1000-2, I had a gig and everything was ok, left over night in the van and next morning ones is powering on, straight away goes in to protection mode. Is any one has some ideas what's happens.

Many thanks

[bruce]

My first thought for any piece of kit which was working, was left in a van overnight in winter, then brought indoors into the warm and powered on would be internal condensation.

[egiux]

I opened, all covers to check, no dampness and condensation, all dry, cleaned all dust from coolers, but same problems

[MarkPAman]

Is it going into protection with speakers plugged in? Could be a short in a speaker or cable.

 

What happens if you disconnect first the speakers, then the speaker cables?

[egiux]

When I powering on, instantly goes in to protection mode with out speakers and any other devices plunged in

[Brian]

A couple of options...

 

1) There are a couple of T4A fuses that feed to the +/-15V rails. Check they are OK.

 

2) One of the power amplifier channels has gone DC

 

3) There is a fault in either the fan circuit or the transformer over-temperature circuit.

 

4) There is fault in the protection circuit itself so that it is staying in the power-on mute condition.

[egiux]

Thank You, I will try to go true everything