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Elektor Formant Modular

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Message

Re: HELP with hot problm...Ilve update

2005-08-13 by markfrancombe

(DOH! no edit in Yahoo... and DANG no warning when you leave webpage 
and come back and your half writing message is gone... 2nd time im 
writing this... no wonder Yahoo is losing the battles...)

ANYWAY... gone a little further on my PSU problems and sussed out...

1. Definately its the PSU thats dead/wrong, hooked up a LFO 
(tentetively, hand on power switch)amd sure enough NO flashing LED's!

2. On schematics the volts IN from transformer (on one side of each 
of the three fuses) are quoted as 18, 18 and 10 volts "alternating" 
(if thats what the sideways S squiggle means?) SO I thought Id check 
there.. with voltmeter on the alternating position (its a cheapish 
digital BTW Kris)Black on ground and red to each of the places, I 
get GOOD readings!! HURRAH! about 19, 17 and 9.5 ish on each..

So problem lies AFTER that, in the depths of the circuit...

So what do I try next?

Kris, Harry?

Buhler?

cheers Mark

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