Luxman: new DML units issued.

[elektroj]

Slightly OT

Can anyone here help me with schematics of Lux 5F70 equalizer? I have one that needs attention. I can, of course, reverse engineer it, but I thought i'll ask first.

Thanks!

 

[Luxmanhoarder]

M12 Amp One Channel out

I have one with one channel out, but no DC offset, no fuses blown. How would I be able to determine if the DML module (or modules) is (are) the problem? Is there an easy way to tell?

Thanks!!!!

 

[llwhtt]

Where are you checking for DC offset? If the DC offset is too high the speaker relay won't energize and you'll get 0VDC at the speaker terminals which means nothing. You need to check BEFORE the relay.

Craig

 

[Mattochan]

Luxman B-12

Hey All,

I have a Luxman on the bench and the speaker relay won't switch over. Anyone seen the problem? Is the problem likely the DML01 board?

The fuses are fine and all of my voltages seem okay. I have noticed that Q202, 203, 204, and 107 are all getting pretty warm. Not smoking but compared to the other transistors, they are warm. All of the cases of the power transistors on the back heatsink are at 70V or -70V to ground. Is that normal? Seems like a safety issue if it is correct. Thoughts?

Thanks
Matt