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  1. Replies
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    I used to ďflywireĒ a lot of that stuff upside...

    I used to ďflywireĒ a lot of that stuff upside down... but it can be tricky when heat sinks are involved.
  2. I would “guess” the B+ is near (probably less...

    I would “guess” the B+ is near (probably less than) 450 volts.
  3. Good advice.. thanks.. evidently these have...

    Good advice.. thanks.. evidently these have charge indicator leds on them. I canít see a problem with paralleling the output terminals. May try this.. The current draw on the pedal is 105ma if it can...
  4. What are the filter caps rated at? Are they...

    What are the filter caps rated at? Are they original? B+ will be less than that?
  5. Or this one.. even a better price. I donít really...

    Or this one.. even a better price. I donít really need on this complex....
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    Tell him to buy a $12 package of Hearos and turn...

    Tell him to buy a $12 package of Hearos and turn down or use a speaker attenuator as necessary.
  7. Then my best guess is itís a 100 ohm B taper just...

    Then my best guess is itís a 100 ohm B taper just like it says. Measure from the middle of the element to each end. Should be about 50 ohms each way.
  8. Do what Dude says. Take it apart. You should be...

    Do what Dude says. Take it apart. You should be able to measure the rest of the element. Measuring to the middle from each end it will give you an idea of the taper too.
  9. Itís usually easier to hardware the mess.

    Itís usually easier to hardware the mess.
  10. While sourcing batteries I found this: Pedaltrain...

    While sourcing batteries I found this: Pedaltrain PT-VT3 Volto 3 Power Supply w/Polish Cloth and 2 Patch Cables https://www.amazon.com/dp/B07R8PLGBW/ref=cm_sw_r_cp_tai_Rk8jDbHS93CE1 and others...
  11. I would guess itís a 100k B taper. As Enzo says....

    I would guess itís a 100k B taper. As Enzo says. Flywire something in. It wonít hurt anything. I doubt if itís a linear taper for a volume pot. Also look at other Ibanez amps with similar...
  12. Replies
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    1,671

    I play with a guy that runs an at least 15 year...

    I play with a guy that runs an at least 15 year old rack processor and rack preamp into the “main amp in” on a JCM2000. He is always talking about his “Marshall Sound”! To me.. it always sounds like...
  13. 7.1 in Mohave tonight. I felt that one rockiní...

    7.1 in Mohave tonight. I felt that one rockiní and rolliní!
  14. The classic rig from the 80s was a ProCo Rat into...

    The classic rig from the 80s was a ProCo Rat into an older JCM 800. A Rat by itself into a clean amp is a bit brittle for most people.. but itís all subjective. The JCM 900s have clipping diodes in...
  15. Iím a native of So Cal. I slept through it but it...

    Iím a native of So Cal. I slept through it but it wasnít much in La Jolla. I can remember being knocked down during the Alaskan earthquake in the early 60s aa child. They had a sunami warning.. so we...
  16. I see the ORIGINAL problem as possibly being...

    I see the ORIGINAL problem as possibly being caused by 2 things.. microponic tubes physically coupling or the power supply being modulated. It may be normal. If you are having a volume control issue...
  17. Replace them all btw..

    Replace them all btw..
  18. Set your meter to the correct scale for DC volts....

    Set your meter to the correct scale for DC volts. Connect the black lead to ground. Use the red probe. Start at your power supply. You should have around 9vdc. Follow it into the circuit. Can you...
  19. Replies
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    Are you monitoring the voltage on the relay? A...

    Are you monitoring the voltage on the relay? A common problem with protection relays is the contacts ďcarbon upĒ and become resistive, arc, or stick.
  20. Is there power to the circuit when the switch is...

    Is there power to the circuit when the switch is toggled? And I donít want to sound condescending.. are you sure itís plugged in correctly? We have all done it. A sure sign of a pedal plugged in...
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    The ďcompression factorĒ is really obvious if you...

    The ďcompression factorĒ is really obvious if you share the stage using traditional gear with someone using a modeling amp. In general they have 2 modes imhe. Either burying you with 200 Watts on tap...
  22. Well.. sort of. The perception of volume will not...

    Well.. sort of. The perception of volume will not be 50% less... especially if the amp isnít dimed.
  23. Man.. that’s some really rock hammer testing you...

    Man.. that’s some really rock hammer testing you are doing. If that PT isn’t shorted you are surely stressing the hell out of it. Float the secondary wires and see if your light bulb still glows....
  24. 20 or 30 years ago such statues were enforced in...

    20 or 30 years ago such statues were enforced in CA. If my memory serves me, you ere required to send a registered letter. If the letter was unanswered within 90 days, it was yours. Some people also...
  25. Thread: Tube tester

    by olddawg
    Replies
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    633

    Usually when a transformer insulator cover is cut...

    Usually when a transformer insulator cover is cut like that, someone is looking for a open thermistor. Before you resolder anything measure the primary leads for continuity. Lifting one side is...
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    Thanks.. yeah.. Iíve done both. I was thinking of...

    Thanks.. yeah.. Iíve done both. I was thinking of modern SS Class D combo offerings.
  27. Thatís a very odd coincidence. Float them and...

    Thatís a very odd coincidence. Float them and measure again.
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    If you are going to the trouble of building one...

    If you are going to the trouble of building one of these.. I would strongly suggest you find a Champ or a VJ or some little 5 watter and simply put a voltage divider on the speaker out and try it....
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