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How to read Burny pot codes

 
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jacco
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Joined: 25 Feb 2010
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PostPosted: Tue Jun 26, 2012 1:35 am    Post subject: How to read Burny pot codes Reply with quote

For the ones interested, about pot codes (of course):

Pot codes on Burny's used from 1981 to 1991, so by Kasuga, Matsumoku and Dyna have the following format:

First line:
M500kOhmA (tone) or M500kOhmB (volume)

Second line:
YM L

Year = year
M = month
L = type

M = 1-9, O, N and D; 1=january, 2= february, etc, O = october, N=november and D= december
L = K or P. K=normal type, P=push-pull

So now we know what that the second digit bottom row = month, which was pretty obvious to begin with but overlooked.



In this case the lower right pot has code 52 = march 1985


Last edited by jacco on Sat Jan 11, 2014 2:18 pm; edited 1 time in total
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YOGA64
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PostPosted: Tue Jun 26, 2012 2:31 am    Post subject: Reply with quote

Thanks!
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bluesyrat
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PostPosted: Tue Jun 26, 2012 2:35 pm    Post subject: Reply with quote

Very Very useful!!! Thanks Jacco
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4snaar
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PostPosted: Tue Jun 26, 2012 3:21 pm    Post subject: Reply with quote

Nice information, I guess it also accounts for my Fernandes the revival precision. The volume pot of my fernandes the revival precision has the codes:

M250kOhm and then something which is under solder
32 K

That means that it is from March 1983?

The tone pot has the codes:

M250kOhmA

2N and then solder

That means that it is from november 1982?

The green cap has 1H104K. Does this code relates with a date?

So, I guess my bass was built in 1983.

My bass does not have any other number, so it is nice to have dates of some parts now.

Edit: some grammar.


Last edited by 4snaar on Wed Jun 27, 2012 10:14 am; edited 1 time in total
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jacco
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PostPosted: Tue Jun 26, 2012 4:16 pm    Post subject: Reply with quote

Thanks guys, feb 1983 4snaar

Last edited by jacco on Sat Jan 11, 2014 2:19 pm; edited 1 time in total
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4snaar
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PostPosted: Wed Jun 27, 2012 10:12 am    Post subject: Reply with quote

Thanks!
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Mick51
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Joined: 30 Mar 2008
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PostPosted: Wed Jun 27, 2012 10:55 am    Post subject: Reply with quote

My hat is off to you, Jacco. Very good detective work!
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Udonitron
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PostPosted: Fri Jun 29, 2012 8:08 am    Post subject: Reply with quote

No disrespect here and not to be a Debby Downer (lol) but this is standard practice and pot code layout for almost all pots made for guitars, tube amps, transistor radios, or wherever potentiometers/rheostats are used.
Most pot manufacturers follow this method and pot codes have been used for years to date old amps, radios, pedals, etc.
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Last edited by Udonitron on Fri Jun 29, 2012 8:26 am; edited 1 time in total
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jacco
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PostPosted: Fri Jun 29, 2012 8:16 am    Post subject: Reply with quote

Lol Chris
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Udonitron
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PostPosted: Fri Jun 29, 2012 8:25 am    Post subject: Reply with quote

<3 U Jacco!
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pedalGEEK
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PostPosted: Fri Jun 29, 2012 12:08 pm    Post subject: Reply with quote

Good info, thanks!
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