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Dying VU meter?

C

chameloman72

Active Member
My KR9050 has an ailing VU meter? The left VU works perfect, but the right one goes dead and then jumps back to life once in awhile sometimes only working half way. Anybody have a cure for this? I love the VU's and want them both working evenly. Thanks in advance for any tips or cures!
 
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Check the adjustment pot for it.
Follow the two wires from the back of the meter that aren't the lamps back to the source, and there should be two pots nearby.
 
It sounds like you have a loose connection somewhere. The question is where? I don't know how technically adept you are, but you might pop the cover and have a look around inside. If it works once in a while, it sounds like a bad connection somewhere...good luck.
 
Sir.Byrd said:
Check the adjustment pot for it.
Follow the two wires from the back of the meter that aren't the lamps back to the source, and there should be two pots nearby.
Click to expand...

What do I do with the pot? I see something that looks like a little metal box with two alan screws in it? Is that it?
 
Don't mess with the pots or screws..Unless you have the test equipment , service manual and knowledge to use both...:scratch2:
 
My Yamaha amp has been having this problem lately with the left channel power meter. Turned out that some of the contacts on the main input selector switch, as well as the power output/record level switch, both don't get quite enough "exercise".
Moral to the story: check all your switches, rotary, toggle, or pushbutton!
 
Amen. If you want to test the meter, swap the wires with the good meter. If the meter itself is the problem I'd be happy to attempt to repair it. I have a microscope and steady hands!
 
Nakdoc said:
Amen. If you want to test the meter, swap the wires with the good meter. If the meter itself is the problem I'd be happy to attempt to repair it. I have a microscope and steady hands!
Click to expand...
The very man I'd recommend. Nakdoc worked his magic on Yamaha UC-1 meters for me.
 
premiumplus said:
It sounds like you have a loose connection somewhere. The question is where? I don't know how technically adept you are, but you might pop the cover and have a look around inside. If it works once in a while, it sounds like a bad connection somewhere...good luck.
Click to expand...
I have a question to all of you guys--my friend was working on the VU meters on his kenwood 9050,and where the board is for the meters--he clipped the wrong wires, and now both vu meters don't work and the 9050 goes into protect at half volume--can you guys tell him what he possibly did wrong? thanx the bird
 
Well, cut meter wires won't stop the audio. Could he have reattached some wires in the wrong place? Could a loose piece of wire be inside the circuitry?
 
It was the two posts were the meters are hooked to---he tuched them with the metal pliers and then the receiver went into protect and both meters now do not work and the receiver will go into protect at half volume!:tears:
 
So if you have two VU meters and one moves slowly and accurately, but the other one only moves smoothly at lower levels and then gets jumpy at higher levels.....is this the meter or the control circuit? It's like watching the needle of a SPL meter in slow response and then in fast response. If I put a steady tone into the inputs the needles are equal, though.

Thanks!

Oh, this in for an Akai 4000DS MkII R2R.
 
TinCanAlley said:
So if you have two VU meters and one moves slowly and accurately, but the other one only moves smoothly at lower levels and then gets jumpy at higher levels.....is this the meter or the control circuit? It's like watching the needle of a SPL meter in slow response and then in fast response. If I put a steady tone into the inputs the needles are equal, though.

Thanks!

Oh, this in for an Akai 4000DS MkII R2R.
Click to expand...

Hey...don't hijack my thread. You are more than welcome to start your own.
 
chameloman72 said:
Hey...don't hijack my thread. You are more than welcome to start your own.
Click to expand...

Didn't know you were going to be so possessive. I figured that since this thread was about VU meters I'd toss my question in (as did another member about his) and see if it would get the discussion going and possibly provide help for all.

I'll take it to my own thread.

Later
 
Read an old post by you on meter repair 6 years ago.
Have a McIntosh c2300. The left meter works well but the right "sluggish" and reads about half the other. It goes back to its resting point when machine off or when I set the balance to give it no signal. I swapped left and right meter and its definately the meter. I removed a small printed circuit board from rear and it has 6 diodes and and 12 surface mounted resistors.
I was wondering if you could give me some advice?
 
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