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    And an hour later.. ear fatigue..

    And an hour later.. ear fatigue..
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    Yep.. or even a modern 1x12” closed back cab.

    Yep.. or even a modern 1x12” closed back cab.
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    Well.. you can mount one the transformer using...

    Well.. you can mount one the transformer using one screw for test.. or even a spot of Velcro. I’ve done both. As long as you have enough flywire you can put the OT anywhere. Many old amps had them...
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    You can swap them in with wire nuts unmounted...

    You can swap them in with wire nuts unmounted once the amp,is operational. That’s what I would do. Imhe the beefier ones tend to have more bass response.
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    Cool.. the picture was distorted on my device.

    Cool.. the picture was distorted on my device.
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    https://www.circuitspecialists.com/blog/taking-mea...

    https://www.circuitspecialists.com/blog/taking-measurements-with-an-oscilloscope/
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    Excellent! Now spend $12 and buy an isolation...

    Excellent! Now spend $12 and buy an isolation transformer for it.
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    Use your scope to count the frequency. Itís easy.

    Use your scope to count the frequency. Itís easy.
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    It’s a 5 watt amp right? Everything on 10 on the...

    It’s a 5 watt amp right? Everything on 10 on the amp. Bring the volume up on the guitar until you like it. Roll off the tone control if too bright. Be careful if its the original speaker. Depending...
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    Line level signal is much higher level and a...

    Line level signal is much higher level and a diffent impedance than instrument level signal. Can you plug it into an aux or tape input on a stereo or a line input on a PA , effects return, or main...
  11. Another trick is to float the output transistors...

    Another trick is to float the output transistors on the “bad” channel and see if the other channel works. If you have one working channel then you can compare the two circuits. Yes.. do not hook the...
  12. If you stripped the board make sure you didn’t...

    If you stripped the board make sure you didn’t install an electrolytic cap backwards? No DC offset? Do you have some freeze to “tickle” some components. Your schematic gives you some voltages. Use...
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    If you don’t have hum you don’t need it. I prefer...

    If you don’t have hum you don’t need it. I prefer ceramic sockets with a wire retainer. About $2.
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    Are you measuring any dc on the pots or at the...

    Are you measuring any dc on the pots or at the cap?
  15. Go to a thrift store and buy an old cassette...

    Go to a thrift store and buy an old cassette recorder or whatever with a VU or two for next to nothing and salvage parts.
  16. VU Meter 2x Panel VU Meter Warm Back Light...

    VU Meter 2x Panel VU Meter Warm Back Light Recording & Audio Level Amp with Driver Board https://www.amazon.com/dp/B07SFHV85Y/ref=cm_sw_r_cp_tai_NuaDEb01DC7K2
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    What happens when use a shorting plug in the...

    What happens when use a shorting plug in the input? What is your ripple measurement on the rail voltages.
  18. Why not make a calibrated ladder with a green,...

    Why not make a calibrated ladder with a green, yellow, and red LED? You drive it with a transistor or op amp then use resistors and a trim pot. Cheap, quick and effective. In a small project box.
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    Or swap in a bag of electrolytic caps starting...

    Or swap in a bag of electrolytic caps starting with the filter caps...
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    I hope this adventure works for you and you are...

    I hope this adventure works for you and you are doing it for the learning experience.. but I wouldnít be heartbroken if you arenít successful. Unless something has changed these amps arenít very...
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    Use a compressor pedal.. One that has more than...

    Use a compressor pedal.. One that has more than unity gain.
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    Seriously.. Try the reset procedure. I have...

    Seriously.. Try the reset procedure. I have bought several dead or malfunctioning Line 6 amps off of Craig’s list for next to nothing intending to use them for cabinet of builds only to find they...
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    Have you tried a hard reset as per the owner’s...

    Have you tried a hard reset as per the owner’s manual?
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    Yeah.. the Pace units I used always had electric...

    Yeah.. the Pace units I used always had electric motors and rebuildable diaphragm pumps. I do remember seeing the compressed air style units in the catalog. Always thought it would be great to have...
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    Yeah these have been around forever. I’ve seen...

    Yeah these have been around forever. I’ve seen them “ converted” by connecting a vacuum source to the extraction tube. I knew one guy that did it with 2 big water bottles. As water poured from on to...
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    I would still check for ripple on 40 year old...

    I would still check for ripple on 40 year old filter caps. Do you have an o’scope? Do you have any hum?
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    My guess it was done to use the amp as a...

    My guess it was done to use the amp as a distortion device when cranked into another amp.
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    I always used a Pace Station. A Hako chip...

    I always used a Pace Station. A Hako chip remover. Solder braid and Chip Quick. Depending on the situation. Never cared much for hand pumps.
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