This amp has an odd issue. Owner said it is cutting in and out and also signal strength drops. Issues on both channels.
I plugged a 1K signal into channel one. Played fine for about 20 seconds, then noticed the signal strength drop a bit, then a thumping noise started, followed by a screech noise. I removed the input signal (pulled plug out) and lowered volume channel one to zero.
Screech continued, I touched EF86 tube and it got louder, like a scream.
All tubes test good (I know that does not mean some may be bad).
Any initial thoughts?
Never worked on this type of amp and with these pins on the board. Are the pins filled with solder and the leads drop into the hole of the pin? How do you solder these?
Thank you, Mark
vox_ac15h1tv_ac15h1tvl_ver.1_sm.pdf
I plugged a 1K signal into channel one. Played fine for about 20 seconds, then noticed the signal strength drop a bit, then a thumping noise started, followed by a screech noise. I removed the input signal (pulled plug out) and lowered volume channel one to zero.
Screech continued, I touched EF86 tube and it got louder, like a scream.
All tubes test good (I know that does not mean some may be bad).
Any initial thoughts?
Never worked on this type of amp and with these pins on the board. Are the pins filled with solder and the leads drop into the hole of the pin? How do you solder these?
Thank you, Mark
vox_ac15h1tv_ac15h1tvl_ver.1_sm.pdf
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