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Quick TB-303 fix(I hope)
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Quick TB-303 fix(I hope)

by Duhhuhh on Thu Jul 28, 2011 7:21 pm

Hi everyone. First timer here.

I just picked up a TB-303 and a TR-606 at a thrift store.
The TR-606 works perfect, but the TB-303 was only outputting 1 channel via headphones.

Took it apart and looks like a couple resistors got zapped.

I found the service manual online and the resistors are 163,164, and 165.
Not very good at reading schematics but it looks like 165 is a 100k, 163 and 4 say 10x2.

Does that mean (2) 10k resistors?
Anybody know the exact parts needed?

Any help would be great.
Thanks
Duhhuhh
 
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Re: Quick TB-303 fix(I hope)

by guest on Thu Jul 28, 2011 9:59 pm

they are 10 ohms
probably one of them is fried
if youre only getting signal out one ear

out of curiosity
was the 303 found at a general thrift store
or one that mostly carries audio gear
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Re: Quick TB-303 fix(I hope)

by Duhhuhh on Thu Jul 28, 2011 11:34 pm

Thanks for the quick response.
Correct me if I'm wrong but, guessing I'll need 2 of thesehttp://www.radioshack.com/product/index.jsp?productId=2062330&CAWELAID=107595221%20
And 1 of thesehttp://www.radioshack.com/product/index.jsp?productId=2062334%20


Found both a regular crappy thrift store. Funny thing is usually they put the "nice" stuff in a different area.
These were mixed in with old typewriters, speakers, & cable/satellite TV boxes.
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Re: Quick TB-303 fix(I hope)

by guest on Thu Jul 28, 2011 11:49 pm

the first link is the wrong part
and i couldnt get the second link to work

if you can hear out of one channel
then only one resistor is blown
but it probably wont hurt to replace them all

r163 and r164 should be 10 ohms 1/4w
r165 is 100 kohms 1/4w

you should just buy this
http://www.radioshack.com/product/index ... ssortments

the picture is most likely wrong in that link
if you go to most radioshacks they have them in stock


thats an impressive find
i figured they had all been bought up decades ago
did you get the deal of century as well
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Re: Quick TB-303 fix(I hope)

by Duhhuhh on Fri Jul 29, 2011 12:22 pm

Great, the ones I linked to were 1/2w.
Don't really need 100 of them but it's only $7 bucks.

Only paid $10 each so I'm not sure if I'll keep or sell them after it's fixed.
Duhhuhh
 
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Re: Quick TB-303 fix(I hope)

by guest on Fri Jul 29, 2011 1:41 pm

having a reistor kit around is always handy

and you did get the deal of the century
congratulations
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Re: Quick TB-303 fix(I hope)

by phono on Fri Jul 29, 2011 5:01 pm

guest wrote:and you did get the deal of the century
congratulations


and quite possibly one of the last :D
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x0x #733 Image SH-101 MC-202 TB-303 TR-606 TR-808 TR-909 MKS-50 Juno-106 A-100 Virus-B E-6400 SX-150 Monotron
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Re: Quick TB-303 fix(I hope)

by Duhhuhh on Mon Aug 01, 2011 12:58 pm

Success!

Replaced the resistors and everything is working fine.
Thanks so much for the help guest.

Just curious, "IF" I was willing to sell these, what would be a fair price?
Duhhuhh
 
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Re: Quick TB-303 fix(I hope)

by guest on Mon Aug 01, 2011 8:10 pm

check ebay for the going rate
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Re: Quick TB-303 fix(I hope)

by Duhhuhh on Tue Aug 02, 2011 12:14 am

I have checked Ebay, and was quite surprised what people were asking for.
Then I noticed most of the auctions have no bids, so not sure if those prices match what people are willing to pay.
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Re: Quick TB-303 fix(I hope)

by isak on Tue Aug 02, 2011 1:06 am

you are one of the luckiest people in the world!
dont sell them, in the near future you will know how lucky u'v been.

have fun :wink:
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Re: Quick TB-303 fix(I hope)

by phono on Tue Aug 02, 2011 1:41 am

Check eBay completed listings for units that have sold with bids, it'll give you a good idea of the real world value.
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Re: Quick TB-303 fix(I hope)

by Computer Controlled on Tue Aug 02, 2011 9:11 pm

DAMN!!!

:shock:
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