Quad 303 cracking and pop

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24-Jan-2018 04:05 AM

sim

sim

Posts: 8

Recently playing on the 303/33 set, there was a loud cracking and pop sound coming with the right channel alone. I'm able to isolate the problem where it was from the quad 303 only.

any advise how to troubleshoot this... usually is it the cap or the small signal transistor causing this.

thanks in advance for advise.

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31-Jan-2018 02:30 PM

kwat

kwat

Posts: 15

is there no one who can help?
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02-Feb-2018 02:41 AM

EJP

EJP

Posts: 1475

We can help but not via the forum. There are too many possibilities. You could try replacing small signal transistors Tr100-104, but I can't guarantee success.
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02-Feb-2018 03:44 AM

sim

sim

Posts: 8

Hi there,

I managed to replace those old small transistors such as TR100 to TR107 for both driver cards.. now the cracking sounding is gone.. Still monitoring on this set...

thanks

sim

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