Il take a closer look tomorrow. As these were not popular amps there is no schematics etc available. I not 100% sure what I m looking for but Il do some research. Would you be able to take a closer look at the pics of inside the amp and see if you can spot any that are obvious? That would be a great help.
🙂
Good news; the capacitors that I recognise all seem to be polyester and teflon types, so not paper.
Excellent. I'm hoping to get the valves tested when I have a bit more time, hopefully in the next week or so. I can take it from there. Il keep you updated.
Not much progress so far with this. Following advice Iv read and been given so far, the plan is:
- Install a IEC Mains Inlet and properly ground the chasis.
- Replace the DC blocking capacitors (between stages)
- Replace the anode resistors on the pre-amp valves
- Replace the the cathode bias resistor
Then I am going to buy a Variac in order to slowly increase the voltage. If all goes well I will try wire in TRS speaker outputs.
A few things Im still not sure about...
Im pretty sure this strand of wire next to the voltage selector is the 'fuse'.
The new IEC Mains Inlet will have its own modern fuse. I want to make sure I don't stick a fuse in that's rated to high. How can I work out which fuse to use? Also, What should I do about that old wire-able one?
Cheers.
- Install a IEC Mains Inlet and properly ground the chasis.
- Replace the DC blocking capacitors (between stages)
- Replace the anode resistors on the pre-amp valves
- Replace the the cathode bias resistor
Then I am going to buy a Variac in order to slowly increase the voltage. If all goes well I will try wire in TRS speaker outputs.
A few things Im still not sure about...
Im pretty sure this strand of wire next to the voltage selector is the 'fuse'.
An externally hosted image should be here but it was not working when we last tested it.
The new IEC Mains Inlet will have its own modern fuse. I want to make sure I don't stick a fuse in that's rated to high. How can I work out which fuse to use? Also, What should I do about that old wire-able one?
Cheers.
Last edited:
Hi,
No piece of equipment I've ever seen has an
externally accessible mains fuse like that.
rgds, sreten.
No piece of equipment I've ever seen has an
externally accessible mains fuse like that.
rgds, sreten.
Hi,
No piece of equipment I've ever seen has an
externally accessible mains fuse like that.
rgds, sreten.
Hi sreten, Its not external. its above the valves behind the grid shaped cover. I took off to take the picture.
Before you do anything you must find or trace out the circuit. Without that we can't help very much. Then make a lamp limiter. Finally, do some reading on how to re-form an old electrolytic.
If you want to get this amp back into safe working order then you have to take it a step at a time. At each step you will feel hindered by your own lack of experience, but you can learn as you go along.
If you want to get this amp back into safe working order then you have to take it a step at a time. At each step you will feel hindered by your own lack of experience, but you can learn as you go along.
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