The Voltage Amplification tubes (1st stage - 12AX7 + parallel drive 12AU7) in my amp jump really bright when first turning on the amp. A second later they are dim and appear normal.
Is this a Normal operation of this amp?
It also is much quieter out of the left channel. Obviously this part is not normal. I have a spare set of tubes to install here but before possibly damaging them, I want to see if there is something else wrong.
Thanks!
Is this a Normal operation of this amp?
It also is much quieter out of the left channel. Obviously this part is not normal. I have a spare set of tubes to install here but before possibly damaging them, I want to see if there is something else wrong.
Thanks!
Attachments
As you wish.vkung:
I sent you a PM with all the reference voltages and some of the other things I found.
Thanks!
I sent you a PM with all the reference voltages and some of the other things I found.
Thanks!
Multifunction Meter DIY kit, kuman Mega 328 Graphic transistor Tester, NPN PNP Diodes Triode Capacitor ESR SCR MOSFET Resistor Inductance LCD Display Checker with case and screwdriver K77, Multi Testers - Amazon Canada
Those caps were properly damaged.
If you do not know how to test those caps. You can buy this tool from AMAZON
to help you.
Those caps were properly damaged.
If you do not know how to test those caps. You can buy this tool from AMAZON
to help you.
Tube flash is normal, depending on the manufacturer. You can google it. I just learned about that recently. I use Northern Electric tubes too. They all flash.