Dynaco-Doctor Forum

Welcome! Need support, you got it. Or share your ideas and experiences.

Return to Dynaco-Doctor Forum


Message Sort: Post Order or Asylum Reverse Threaded

PAS3 noise from phono input.

104.173.192.199

Posted on June 17, 2021 at 08:46:09
fishy
Audiophile

Posts: 1031
Joined: April 15, 2002
Hello-

I have a PAS3 that makes loud noises when I use the phono input. The line level works fine with no noise. Any ideas on how to fix the phono section problem?

Thanks,
Dan Donovan

 

Hide full thread outline!
    ...
Can you be more specific than "loud noises"?, posted on June 23, 2021 at 13:35:13
1973shovel
Audiophile

Posts: 10117
Location: Greenville SC
Joined: February 25, 2007
Is it a hum? Popping?

Have you tried cleaning and tightening the RCA input jacks? Have you done the same with the tube sockets? Have you tried swapping the 12AX7s between the phono and line stage? Have you compared your voltages to those listed in the PAS manual?

You don't give us anything to go on.

 

RE: Can you be more specific than "loud noises"?, posted on June 23, 2021 at 17:52:10
fishy
Audiophile

Posts: 1031
Joined: April 15, 2002
Hello-

Sorry for the vague post. The noise really loud, it only occurs when using the phono input. The line input is not affected.

Thanks,
Dan

 

With all due respect..., posted on June 24, 2021 at 05:11:42
1973shovel
Audiophile

Posts: 10117
Location: Greenville SC
Joined: February 25, 2007
Going from a description of "loud" to "really loud" doesn't give any more of an idea of the cause of the problem.

Please try the possible fixes I listed in my first response (tightening RCA connection, swapping tubes, etc) and if that doesn't work, post again with a clearer description of the noise, such as hum, popping, etc.

Good luck with it.

 

Thank You!, posted on June 28, 2021 at 15:16:24
fishy
Audiophile

Posts: 1031
Joined: April 15, 2002
Hello-

After following your suggestions, I managed to get my PAS 3 working, and it sounds great.
Thank you for your patience and your help.

Best,
Dan Donovan

 

You're welcome, posted on June 28, 2021 at 20:43:17
1973shovel
Audiophile

Posts: 10117
Location: Greenville SC
Joined: February 25, 2007
I'm glad you got the issue corrected. Thanks for letting us know!

 

RE: With all due respect..., posted on March 17, 2022 at 05:41:26
Posts: 9
Location: Pennsylvania
Joined: February 10, 2020
I am looking to upgrade my pre amp for my ST 70, I just bought a Rotel 1580
RC1580 V02, I don't like the sound. I was using a Pas4, but it needs to rebuilt, and I don't want to put any money into it.
J.LYNCH

 

pre amp upgrade, posted on March 17, 2022 at 07:01:41
Posts: 9
Location: Pennsylvania
Joined: February 10, 2020
I am looking to upgrade my pre amp for my ST 70, I just bought a Rotel 1580
RC1580 V02, I don't like the sound. I was using a Pas4, but it needs to rebuilt, and I don't want to put any money into it.
J.LYNCH
J.LYNCH

 

I'm not sure what your point is..., posted on April 7, 2022 at 05:29:51
1973shovel
Audiophile

Posts: 10117
Location: Greenville SC
Joined: February 25, 2007
but good luck finding a preamp which suits you.

 

Page processed in 0.025 seconds.