Hello,
I just picked up a Guild 98RT amp.
Pretty cool. It works but has a couple issues.
I don't regognize the transformer codes though.
Can anybody help me with the manufacturer
and date on these..?
See attached images.
Bill
Transformer ID and date needed
Moderators: pompeiisneaks, Colossal
Transformer ID and date needed
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Murrayatuptown
- Posts: 51
- Joined: Thu Jun 13, 2019 11:26 pm
- Location: Michigan
Re: Transformer ID and date needed
...
Last edited by Murrayatuptown on Sat Jun 15, 2019 12:30 pm, edited 1 time in total.
Murray
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Murrayatuptown
- Posts: 51
- Joined: Thu Jun 13, 2019 11:26 pm
- Location: Michigan
Re: Transformer ID and date needed
I guess early 60's but that doesn't help make the numbers make more sense to me.
Murray
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Murrayatuptown
- Posts: 51
- Joined: Thu Jun 13, 2019 11:26 pm
- Location: Michigan
Re: Transformer ID and date needed
I assumed 929 was EIA mfr. code, but the dates, if WWYY format, look weird. The OT ends in 17 which is at least possible, if unlikely. The PT '3020' date doesn't make sense to me.
Anyway, took me a few tries to find a list with
929 Todd Electric
I found Todd Systems, that does make transformers.
http://www.toddsystems.com
Found the EIA code here
http://users.eastlink.ca/~mitchlane/EIA_Codes.html
Any idea how old the amp might actually be?
Anyway, took me a few tries to find a list with
929 Todd Electric
I found Todd Systems, that does make transformers.
http://www.toddsystems.com
Found the EIA code here
http://users.eastlink.ca/~mitchlane/EIA_Codes.html
Any idea how old the amp might actually be?
Murray
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Stevem
- Posts: 4576
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- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Transformer ID and date needed
The iron dates to the 20th week of 1960, but checking the dates out on the pots and can filter will many times narrow the build range down even more, as can dates on tubes if there GE brand!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
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SoulFetish
- Posts: 189
- Joined: Wed Apr 03, 2013 1:50 pm
- Location: Norwood, MA
Re: Transformer ID and date needed
Best guess is the manufacturer is Todd Electric Co. (926). #3 may be the plant code and probably manufactured in '59 & '60 respectively. the last 2 digits are the week of production