Vintage Synth Repair

Hi,

You could have low voltage at step-up transformer output.
Transformer could have developed shorted turns.

Do the oscillator transistors get hot?

Good luck,
Noel


From: Quazimodo 
Sent: Monday, July 16, 2012 6:52 PM
To: vintagesynthrepair@yahoogroups.com 
Subject: [vintagesynthrepair] Backlight Revisited...

  
Hi folks,

I wonder if anyone has any ideas about this one.

I bought a new backlight for this Korg Wavestation EX... it didn't work. I checked the pins on the power supply feeding it... and it lit up one of those neon A/C test screwdrivers.

So I assumed the light was faulty and got a replacememt. Today I wired up the new backlight - on a loose wire, just to make sure it works and... nothing!

I am getting power on the connector... and I have two backlights that don't light on it.

Any ideas/suggestions please...?
Cheers,
TOM