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  1. roughshawd

    LCD driver test

    None of these resistors, which surround the mpu, that runs the driver for the LCD, can be tested for any signal. My meter doesn't give any reading. Is that normal?
  2. roughshawd

    LCD driver test

    It's 121.7 ohms one way and 8.7 ohms the other way
  3. roughshawd

    LCD driver test

    So I should learn something as I go..(hopefully). Got it! When I test this with my diode tester, it reads 1395 one way and 1271 the other. It's a voltage regulator, and I was informed that it should read about half, one way: where if it was 2 one way it should read 4 the other way. And...
  4. roughshawd

    Tantalum capacitors

    Tantalum caps... That's the first component I recognize on this board. Man those are the best kind tool, tell you what, if it blew up, you might replace it with a 16v...4.7uf.. might be a good idea if it's happened alot before...
  5. roughshawd

    Momentary latching switches

    Tell me about the electronic latching circuit, so I can try and understand it on my circuit board that has a combination momentary one-off and volume...please
  6. roughshawd

    Horizon radio reset for power failure....

    My Astron 12 A delivers 12v. Tested good. My radio is sucking up about 8 or 9v when it is connected. At the board on the wire harness where the fuse and ground lines connect.... The meter reads >3v. The radio will not turn on.
  7. roughshawd

    Horizon radio reset for power failure....

    If a device just won't turn on, what is usually the cause??? Cause I checked the fuse, the line, the regulator, the caps, the connections, the accessories, the main amp, and most of the resistance.... There is a constant 3v running where there should be 12v.
  8. roughshawd

    NPN and PNP to gate of N-channel

    So, you can't hope to know whether the battery is charging or not, and it will take some time to really understand what is going on when you apply signal. From here education dictates that you learn what signal is, and how it works to create networks that can do almost anything that power...
  9. roughshawd

    NPN and PNP to gate of N-channel

    I don't know how many times I have told people this. Batteries are a type of capacitor, not just a capacitor. It requires 1 hit to charge a cap, it takes Voltage Ohmage and .002 Amperage to trickle charge a battery. If you want to think in 6 figure values, I will call my shrink for you. Do...
  10. roughshawd

    Frankenstein's Components.

    Scavenger wannabe. I look primarily for stuff that has good mass density and volume. And I have acquired some very very expensive and complicated things that sometimes end up in more pieces than my little shed can hold :). ;)
  11. roughshawd

    LCD driver test

    This is the backside of my radio LCD board. It's 5v regulated and the big rect chip is the driver. The other chip is the MCU that's required by the driver. The top has a momentary push on- off + volume, and a squelch pot. Where would I apply the 5v to test the LCD?
  12. roughshawd

    I grow tomatoes really well, now I'm trying my hand at automating the entire process

    I don't want to "rain" on your parade, but in the USA, we tried to fire 2 devices with one solenoid for a long time. The problem is that solenoid is like a capacitor, it combines the input voltage to the trigger voltage which overloads any power control in the circuit. We tried voltage...
  13. roughshawd

    Horizon radio reset for power failure....

    Thanks... You needed that....!! To take a brick and throw it through a windows, is destruction, But to use that same brick to build a new home is progress. That is assuming you are mason, or as the case may be .. terrorist. Does not look like a brick too me...
  14. roughshawd

    Horizon radio reset for power failure....

    Still 3+ volts at the board. Still dead as a door nail.....
  15. roughshawd

    Horizon radio reset for power failure....

    My jumper breakout....
  16. roughshawd

    Horizon radio reset for power failure....

    Pulled the green wire jumpers, and installed JST breakout between broken black lead points... Has 55.7k ohms on breakout. Good signal series vertical on the test of those....
  17. roughshawd

    Horizon radio reset for power failure....

    In the shop with better natural lighting... Your cheesecake picture of the power section. .(frankly, I have told some others this....old Radios are generally powered with external PSU because of noise, but the modern ones don't use external PSU, they are powered by a common power, and as a rule...
  18. roughshawd

    Horizon radio reset for power failure....

    Also, thoc image shows the broken black jumper lead , and a metal clip that holds the microphone into the socket. These are right where the case closes watertight. The residue of the black jumper says it maybe arced across this. I don't know if there was a component on the black jumper or...
  19. roughshawd

    Horizon radio reset for power failure....

    Is this supposed to be a fuse location? If so, what size do I order?
  20. roughshawd

    Horizon radio reset for power failure....

    I have an astron 12 v 12a power supply It return 12.12v according to my multi meter
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