Left Channel

Status
Not open for further replies.

cassie1574

Member (SA)
Oct 31, 2015
2
0
0
Lancashire
Hi all,

I have almost finished a restoration job on my Sharp VZ-2500H Boombox. :thumbsup:
Its provided me with years of sound pleasure during my youth. My daughter is now exited at the prospect of taking over ownership of this classic. One issue I have is a loss of sound from the left channel. :thumbsdown:
I have found the problem to be on the volume control dual 100K sliding potentiometer.
The left carbon resistor for the pot is open circuit. It is listed as part number RVR-Q0107AFZZ. I cannot find one anywhere on-line. :sad:
Using a generic replacement is not easy due to the rare centre tap and the unique pin arrangement used on the pot. Would anyone know of a supplier or have a used replacement I could purchase.

Any help is always good!
 

Attachments

cassie1574

Member (SA)
Oct 31, 2015
2
0
0
Lancashire
Hi Boomus and thanks for the reply. I have already been down that road....it doesn't look easy. The damaged carbon track with the damage is rivited onto the insulated board. Even if I could get a new one it would not have the unusual centre tap. Have already taken a few new sliders apart to find out this....its anoying!
 

Superduper

Member (SA)
the connection at the rivet fractures. There are conductive compounds that you can apply (with pen or brush) that will restore the connection. I know, I've done it. Use silver for the rivets. Use the black carbon to restore breaks on the resistor but be real careful that you don't chance the value too much or sound will be unbalanced.
 

Northerner

Member (SA)
Apr 16, 2012
5,322
250
83
North West UK
Hello to another northerner :-)

I've used stuff with actual silver in it I got from the high street electronics shop whose name completely escapes me for the moment but as Norm says apply it sparingly or it will affect the resistance
 

BoomboxLover48

Member (SA)
Dec 3, 2010
5,738
252
83
Chicago, IL
Superduper said:
the connection at the rivet fractures. There are conductive compounds that you can apply (with pen or brush) that will restore the connection. I know, I've done it. Use silver for the rivets. Use the black carbon to restore breaks on the resistor but be real careful that you don't chance the value too much or sound will be unbalanced.
Like our Top Expert Superduper said use conductive compounds which is an option. Use conductive paint. I've done that.
 
Status
Not open for further replies.