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  1. tedstruk

    Electric Guitar Amp Circuit Check

    Alright, I understand, there are ways that you do stuff and ways that you don't do stuff. Asking you was one of those don't do stuffs, and not using etiquette and protcol was also a don't do stuffs, and so I missed two of three on those.... I like those kit amps, they are fun to use, yeah I...
  2. tedstruk

    Electric Guitar Amp Circuit Check

    What would be a good regulator circuit for 9v, so that it does not effect the in-out?
  3. tedstruk

    Electric Guitar Amp Circuit Check

    OK, when you add volts you are changing the system. I know that much. I am using a 9v battery to power an amplifier that is not supposed to change the system in-outs, so I will need some kind of power management system to handle the 9v with. Lets say a regulator that matches the volts of the...
  4. tedstruk

    Electric Guitar Amp Circuit Check

    old man, smarter than you, using an epitaxial transistor and a set of 10v 100uf caps, and a couple of resistors I found in my junk box... mostly trying to figure out what I did the first time to make an amp work! The first one I made, didn't amp much, only a few miliamps, so I added something to...
  5. tedstruk

    Electric Guitar Amp Circuit Check

    Will this work as an amp for a electric simple guitar?
  6. tedstruk

    Need some help with this motor control board

    transistors that require heat sinks, are supposed to make solid contact with the sink. anything between them is not supposed to be there. Some people use grease, I was instructed to never put anything on them. The transistors that were on my Chinese model amp that I got off ebay, required a...
  7. tedstruk

    What is the name of this mechanism?

    sounds like a good place for a relay station to me
  8. tedstruk

    Port On The Back Of Automotive Oscilloscope

    I bought a new 1080 oscilloscope, online, and when it arrived it has a banana plug port on the back that wasn't in any of the pictures. can anyone tell me what this port is for and what signal or equipment is supposed to hook up to it? Is it a function port? or a single input, or a driver...
  9. tedstruk

    41 volts in my DVD's AV output jack ground.

    The induction coils are sending my 2vpp osc signal back perfect on one set of coils and showing a loss of about 1v on the other set.
  10. tedstruk

    41 volts in my DVD's AV output jack ground.

    I Got the AV PCB out!!! rah ha ha ha ! the AV PCB is out!...the Mains PCB was easy too. IMG data. you are looking at the front of the machine, the 3 AV inputs and S-vid input and the control board. Away from you is the rear. What should I test first?
  11. tedstruk

    41 volts in my DVD's AV output jack ground.

    OK. The buttons are fine also. So are there any procedures for testing a board for faults? or opens as the case may be? How do I test the thing? I mean a guy can't take out each individual component and replace it and find out whats wrong without replacing everything!!
  12. tedstruk

    41 volts in my DVD's AV output jack ground.

    Can I use a 35v 10uf 85degreeC cap inplace of a 16v 10uf 85degreeC cap? indubidably I would say Yeas, it will increase the voltage capability of the cap.
  13. tedstruk

    41 volts in my DVD's AV output jack ground.

    The bad cap is not totally gone yet, its slowly counting up on the 20m scale from 12.00 to about 17.00 ...quick send pic...its a 16v 10uf V9A GS 85 degree centigrate cap next to a N6H2BB UTC 4580 chip.
  14. tedstruk

    41 volts in my DVD's AV output jack ground.

    Capacitors have a + and a negative side right? so I was thinking, if I test all the caps from the case ground to their + side, I will be able to detect a dead short to ground if one is bad right? NO! (not right cause a bad cap is gonna be dead on both sides, so I had to check both sides and I...
  15. tedstruk

    41 volts in my DVD's AV output jack ground.

    Power button OK. Mains Wiring integrity OK. are the little momentary buttons really supposed to read from .005 to .000, when you push them? The controls board is all one piece, so I check them all, and they all read from .005 to .000 when pressed.
  16. tedstruk

    41 volts in my DVD's AV output jack ground.

    Is it OK to power this board without the main PCB hooked up to it? I pulled the main PCB and the AV PCB(the AV has the power circuits on it), I am thinking that I can use my Osc scope to find any faults on the board, but I have to power the board to do that, and I am a chicken to power the AV...
  17. tedstruk

    41 volts in my DVD's AV output jack ground.

    Yeah...I did it. There wasn't any change in the voltage, but I did experience a strange thing with the unit unplugged... There was about 9v of current still in the power circuits at the fuse to ground, that slowly discharged while I was testing it with the resistor.
  18. tedstruk

    41 volts in my DVD's AV output jack ground.

    I am feeling bad about this. Something tells me that it is fried. I am losing faith quickly... must be my squid...
  19. tedstruk

    41 volts in my DVD's AV output jack ground.

    Found something that looks like it is burned, looking through my magnifier, It looked lie it had a little volcano of plastic on it but when I touched it, it disintegrated and crumbled free from the chip leaving what looks like a "crater in a layer".. After a bit of scratching and some higher...
  20. tedstruk

    41 volts in my DVD's AV output jack ground.

    The AV PCB looks like this on the bottom at the fuse holders and main power input. Is this excessive heat that caused the grease browning?
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