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Calling All "Vintage" Integrated/Receiver Owners - Page 471

post #7051 of 13501
Quote:
Originally Posted by tribestros View Post

Need some help guys.

 

Marantz 2252b on a Panamax MR4000.

 

A light hum that doesn't change based on the volume, but only with headphones.

 

Thought it was a ground loop. Definitely not.

 

Still sounds great, but this is a little annoying.

Have you tried reversing the plug from the Marantz going into the Panamax?

post #7052 of 13501
Quote:
Originally Posted by SpeakerBox View Post

Have you tried reversing the plug from the Marantz going into the Panamax?

 

Yeah, I did. Does it both ways. I thought the Panamax was screwed up, but I plugged it into a regular power strip and it still was there.

 

Actually, I can hear it with or without headphones. ******* it.


Edited by tribestros - 4/21/13 at 3:00pm
post #7053 of 13501

VID I dont mean the off-set I means the current through the output devices. But if it is happening only in one input it wont  be that.

post #7054 of 13501

Speakerbox -If the light hum doesnt change with the volume  it could be a power supply smoothing problem.

                        or even a decoupling cap in the amp itself. or something simple like corrosion on the input sockets giving a HR earth.

post #7055 of 13501
Quote:
Originally Posted by duncan1 View Post

Speakerbox -If the light hum doesnt change with the volume  it could be a power supply smoothing problem.

                        or even a decoupling cap in the amp itself. or something simple like corrosion on the input sockets giving a HR earth.

It would definitely drive me nuts until I figured out what was causing the problem.

post #7056 of 13501
Quote:
Originally Posted by SpeakerBox View Post

It would definitely drive me nuts until I figured out what was causing the problem.

 

It is driving me nuts. It's barely noticeable on speakers (like barely noticeable AT ALL), though. Quite noticeable on headphones, though.

post #7057 of 13501
Could be lots of things, unfortunately, from just needing something cleaned, to maybe the main filter caps starting to fail.

Has it has a complete deoxit treatment?
post #7058 of 13501
Quote:
Originally Posted by Skylab View Post

Could be lots of things, unfortunately, from just needing something cleaned, to maybe the main filter caps starting to fail.

Has it has a complete deoxit treatment?

 

I just did a deoxit treatment on the top board, I didn't take it apart. I'm not confident enough. We have a really good vintage audio store in the area that I might as well take it to.

post #7059 of 13501
The 2252b is a nice receiver, it's worth getting it looked at if they don't charge an exorbitant amount.
post #7060 of 13501
Quote:
Originally Posted by tribestros View Post

 

I just did a deoxit treatment on the top board, I didn't take it apart. I'm not confident enough. We have a really good vintage audio store in the area that I might as well take it to.

Do you mean you sprayed DeoxIt on a circuit board?

post #7061 of 13501
Quote:
Originally Posted by SpeakerBox View Post

Do you mean you sprayed DeoxIt on a circuit board?

 

No, haha, I didn't do it on the circuit boards. That's a recipe for disaster. And I didn't use the lubricant one, anyway.

 

Dude quoted me $90 for a tune up.


Edited by tribestros - 4/21/13 at 4:55pm
post #7062 of 13501

Just checking biggrin.gif

post #7063 of 13501

I unplugged everything. Even the table.Still there. ARGH.

post #7064 of 13501
Quote:
Originally Posted by tribestros View Post

No, haha, I didn't do it on the circuit boards. That's a recipe for disaster. And I didn't use the lubricant one, anyway.

 

Dude quoted me $90 for a tune up.

 

I wouldn't call it a recipe for disaster. It's just a waste of contact cleaner. The only useful places to spray it are pots, switches, and sockets.

 

$90 could be a reasonable price depending on what's involved in the tune-up. I'm used to seeing $40-60 just for a bench fee (test, diagnose, and prepare an estimate without replacing or repairing anything).

post #7065 of 13501
Quote:
Originally Posted by ardgedee View Post

 

I wouldn't call it a recipe for disaster. It's just a waste of contact cleaner. The only useful places to spray it are pots, switches, and sockets.

 

$90 could be a reasonable price depending on what's involved in the tune-up. I'm used to seeing $40-60 just for a bench fee (test, diagnose, and prepare an estimate without replacing or repairing anything).

 

I've already replaced the bulbs and cleaned most of the inside of dust. He's located decently far away and I live in Denton so it's a bit of a hassle, honestly. I'll probably call him tomorrow and see if I can get a more solid quote.

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