Your observations are correct. BTW the proper bulb is #19 miniature lamp.
Nothing else will work. The lamp for the pedals is an automotive bulb, #211-2.
I hope this helps.
Bill
Sent from my iPhone
Bill Hesterman
Mormon Tabernacle Choir
Rocky Mountain Organ Co.
Austin Organs, Inc.
On Nov 3, 2017, at 12:48 PM, CenturyLink Customer <jjs102@xxxxx> wrote:
I think on my 1973 Trio the bulbs are wired in a series/parallel manner.
Sets of 2 bulbs in series that are parallel with other set of 2 bulbs in
parallel. I noticed several times when I replaced one bulb the one next to
it would glow. Strange system.
JJS
Correct but keep in mind if they used a higher voltage bulb on the pedal and
melted the wiring oops! Regarding the music rack, look for that dimmer,
either up by the keyboards or under the keyboards. Lots of organists turned
them down to save on the bulbs.
From: rodgersorgan-bounce@xxxxxxxxxxxxx
[mailto:rodgersorgan-bounce@xxxxxxxxxxxxx] On Behalf Of D. Resor
Sent: Friday, November 3, 2017 5:19 AM
To: rodgersorgan@xxxxxxxxxxxxx
Subject: [rodgersorganusers] Re: Rodgers Exeter 770 Analog organ transformer
Mike,
I missed the reply you first made. This makes perfect sense. If the organ
functions/plays normally then I do not see it to be a power supply emergency
at this point.
To be on the safe side if replacing the lamps with the correct bulbs does not
repair the problem, the power supply DC voltages should be checked by someone
knowledgeable of the technology.
Donald R. Resor Jr. T. W. & T. C. Svc. Co.
http://hammondorganservice.com
Hammond USA warranty service
"Most people don’t have a sense of humor. They think they do, but they
don’t." --Jonathan Winters
From: rodgersorgan-bounce@xxxxxxxxxxxxx
[mailto:rodgersorgan-bounce@xxxxxxxxxxxxx] On Behalf Of Mike Jacklin
Sent: Thursday, November 02, 2017 9:27 AM
To: rodgersorgan@xxxxxxxxxxxxx
Subject: [rodgersorganusers] Re: Rodgers Exeter 770 Analog organ transformer
His pedal bulbs are out, I told him to check to see if they were burned out,
they are the old type car bulbs and folks put higher wattage than they should
at times. I told him to check to see if connections were melted. Also his
music rack lights are dim, told him to check for a dimmer switch and or bad
grounds.
Mike
From: rodgersorgan-bounce@xxxxxxxxxxxxx
[mailto:rodgersorgan-bounce@xxxxxxxxxxxxx] On Behalf Of D. Resor
Sent: Thursday, November 2, 2017 4:42 AM
To: rodgersorgan@xxxxxxxxxxxxx
Subject: [rodgersorganusers] Re: Rodgers Exeter 770 Analog organ transformer
You should be able to measure the DC voltages from the terminal strips where
the cabling attaches to the power supply pwbs. If any of those voltages are
greatly below spec then the complete chassis would have to be disconnected
and removed for further testing/repairs done.
What are the problems/symptoms?
Donald R. Resor Jr. T. W. & T. C. Svc. Co.
http://hammondorganservice.com
Hammond USA warranty service
"Most people don’t have a sense of humor. They think they do, but they
don’t." --Jonathan Winters
From: rodgersorgan-bounce@xxxxxxxxxxxxx
[mailto:rodgersorgan-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Roy
Sent: Wednesday, November 01, 2017 1:00 PM
To: rodgersorgan@xxxxxxxxxxxxx
Subject: [rodgersorganusers] Rodgers Exeter 770 Analog organ transformer
Can the transformer be removed for testing without removing the entire power
supply chassis?
Thank you
--
Paul F. Roy
