Need schematic Chinese 6N1 6P3P showing voltages

[crooner2264]

hope this helps!

 

[crooner2264]

hope this helps!

 

[apaulr]

TY crooner2264

 

[apaulr]

I am happy to report that the amplifier is working now BUT I am failing potentiometer 101 miserably. I got a replacement 100k ohm stereo potentiometer , labelled B100K just like the original and hooked it up the same way as it was before. I could not get the volume to decrease or increase . It played at the level that is set on my potable cd player.
Looking at the old one, the middle pins were input signals then two others (stereo) were output to the input tube (6N1). The other two were strapped together then to ground. Could that be correct? The spare ones connected to each other then connected to ground?

 

[vinylkid58]

Looking at the old one, the middle pins were input signals then two others (stereo) were output to the input tube (6N1)

Obviously that's not right, so just copy the Alps pinout.

 

[apaulr]

Thank you for photo . I believe I see what I am doing wrong. I'll tackle it tomorrow and report back.

 

[apaulr]

so just copy the Alps pinout.

I could not wait ! Just did ! You are da best! Working now...woo hoo!!!

 

[vinylkid58]

That's what we like to hear.

jeff

 

[apaulr]

Looking at the old one, the middle pins were input signals

Thats was my mistake!!!!

 

[apaulr]

That's what we like to hear.

Thanks Jeff

 

[apaulr]

Voltages are fine - what is going on here ?

Yes voltages were fine , it was a faulty potentiometer after all and with the help of vinylkid I got it working again.

 

[apaulr]

Thank you all for chipping in !!

 

[apaulr]

One more question. For this repair I have been using a newly acquired variac set to 110V as this is the input for the power transformer. What are the negatives for plugging this amp into my house ac of 120V?

 

[vinylkid58]

What are the negatives for plugging this amp into my house ac of 120V?

You may exceed the max. filament voltage for the tubes at 120V, so you may want to check that with the variac. Also check output tube dissipation.

jeff

 

[apaulr]

You may exceed the max

ok, thanks ,may just run that amp through the variac. I don't use that amp often , just a few time to keep my tannoys happy