Vintage Synth Repair

These organs used only a single contact for the pedals. It sounds like you
may have a circuitry problem on the pedal board. If the contacts are bent
and not opening properly, you may have a similar problem because they are
low note preference. Thus going up, the lowest not would sound on a bad
pedal, but going down, the bad pedal would be silent. I would bet it's the
pedal keyer ic causing the problem. If you are not familiar with the
circuitry, either go to the MITAtech website and find the name of the
closest tech to you, or contact Morelock. You can order a service manual to
get started. Hope this helps.
 
Keith A. Niver 
Certified MITA tech 
Niver's Service Corp 
801 Columbia St 
Hudson, NY   12534 
518-828-0616, Bus 
518-755-6960, Cel 
kaniver@... 

-----Original Message-----
From: vintagesynthrepair@yahoogroups.com
[mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Kate
Sent: Monday, June 25, 2007 7:48 PM
To: vintagesynthrepair@yahoogroups.com
Subject: [vintagesynthrepair] Wurlitzer Organ repair help



I could use some suggestions to repair my Wurlitzer Model 4373. I 
inherited it from my Uncle recently. It appears that it had not been 
played in quite a while, as a lot of the keys made no sound and there 
was a lot of static in the switches. I cleaned all the contacts which 
restored all the keys and eliminated the static, but the pedals do not 
work right.
Going UP the scale, I press the pedals:
C D E F G A B C
The sounds, however, come out
C D E E G G B C
When I play the pedals DOWN scale, neither the E nor the G play any 
sound...I must go back up the scale to get the sound (albeit the wrong 
notes)
I cleaned the contacts, made sure there were no obvious shorts or 
crushed wiring, but no luck.
Anyone have any suggestions?
Thanks for reading this far...
Bob