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radio not working

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radio not working Empty radio not working

Post  minirats on Wed May 19, 2010 11:15 pm

hi all on way back from L 2B ,my radio stop got power to it, put in my other car not working ,so got spare out put in work car all good put in scamp not a thin .got power to it wot you think i should try next thanks

minirats

Number of posts : 40
Location : high wycombe uk
Job/hobbies : cars r/c boats
Registration date : 2008-08-16

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Post  Rum Tum Tugger on Thu May 20, 2010 9:30 am

Just a few ideas to try:

  1. You say you have power. Typically there are two power connections, one permanent (purple wire) and one from the ignition circuit (green wire), unless your radio is wired to be available full time in which case they will both be supplied from the purple wire. Are they both live?
  2. Try a CD/cassette: does this operate as expected, i.e. track display running or tape moving? This will show if the problem's with the power or just the audio side.
  3. Are the speakers functional? Hang a 1.5v battery on the speaker leads (NOT while connected to the radio!) and check they crackle. This only puts about 1/2 watt of power into the speaker BTW so won't harm them.
  4. Check all the connectors for loose or broken wires. If you have a detachable front panel, clean the contacts and make sure it's securely home.
  5. Does the radio still work in other car? If not, you may have a short in the speaker circuit which has damaged something.
Rum Tum Tugger
Rum Tum Tugger

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Post  minirats on Thu May 20, 2010 6:20 pm

taken it out put in new radio that works in other car , but not in scamp put in old radio works but stops ,were it did before.

minirats

Number of posts : 40
Location : high wycombe uk
Job/hobbies : cars r/c boats
Registration date : 2008-08-16

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Post  wezgit daan saaf on Thu May 27, 2010 11:23 pm

Sometimes you can check voltages with a voltmeter and they will show a good 12 volts,then you put a load on it and a bad connection in the wiring goes open circuit.A good piece of advice is put a small wattage bulb accross the supply to make sure that you do not have any high resistance in the line(bad connection).If you put one side of the bulb to a good known earth and the other to both of the supplies individually the bulb should light up.If you have both of these and a good earth to the radio(not the common earth to the speakers)then the set should work.Also check to see if your radio is individually fused,some have a fuse in the back of them.
wezgit daan saaf
wezgit daan saaf

Number of posts : 1057
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Post  minirats on Tue Jun 01, 2010 11:01 pm

hi all just look at radio in scamp had a old caset player , i put that in and it works ? 3 cd players not work in it ,caset dose .

minirats

Number of posts : 40
Location : high wycombe uk
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Post  Rum Tum Tugger on Wed Jun 02, 2010 7:31 am

The problem could just be multiple dodgy connections somewhere, so that when you test any one of them the fault moves somewhere else. This can be a right [deleted] to find. How old is your Scamp? More to the point, how old is the wiring?
Rum Tum Tugger
Rum Tum Tugger

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