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  1. pharaon

    FM modulator light only and no transmitting

    I have an old power supply board with diodes looks like that but how can I tell if it's 1N5232B since theirs no numbers on it
  2. pharaon

    FM modulator light only and no transmitting

    ok the 13003 is BCE I did as you said so it's BCE I can't find 1N5232B..and how a different diode will effect?
  3. pharaon

    FM modulator light only and no transmitting

    the diode on the board is 790 the one I bought is 530 and I find diode on old board is 620
  4. pharaon

    FM modulator light only and no transmitting

    the diode on the board is 790 the one I bought is 530
  5. pharaon

    FM modulator light only and no transmitting

    well when I tried to by the diode the seller told me they measure diode with amber like 1 amber 2 amber and so on...so I said give me 1 amber diode since it will work on 12v . so he gave me that diode. I measured the transistor red to the left and black on both other led it gave me 630and 670...
  6. pharaon

    FM modulator light only and no transmitting

    i bought these today the diode have number in4007 / m10 the R is 470 ohm I couldn't find the capacitor with 1nf so I guess I have to take it out of an old board. I only find 0.1 nf at the shop will this component work for the new board or not
  7. pharaon

    FM modulator light only and no transmitting

    well what is available also is Veroboard so you can show me how to do it on Verboard the one I can get is look like this one
  8. pharaon

    FM modulator light only and no transmitting

    ok today I bought the transistor and copper board I wonder if you can support me with the circuit diagram to print it on the board many thx yet I didn't know what was the cause of that issue..i mean there was power and light in the screen so what is the cause of the issue is it the transistor...
  9. pharaon

    FM modulator light only and no transmitting

  10. pharaon

    FM modulator light only and no transmitting

    the plug board been damaged when I tried to remove the transistor but I think I can make some bridges to fix it later.. hope those pic can help you to determine what is cause of that issue
  11. pharaon

    FM modulator light only and no transmitting

    so you suggest that I replace the transistor KSE13003? that will fix the problem?
  12. pharaon

    FM modulator light only and no transmitting

    hope this will help
  13. pharaon

    FM modulator light only and no transmitting

    that's all no lines at the back and no more components
  14. pharaon

    FM modulator light only and no transmitting

    do you suggest to change the KSE13003?
  15. pharaon

    FM modulator light only and no transmitting

    sorry for the delay G - V = 5.13 G - A = 1.65 V - A = 3.46
  16. pharaon

    FM modulator light only and no transmitting

    you want me to measure the voltage of the 3 wires in the main portion which have the screen right? and you want me to measure the volt between what wires exactly like black - red black- white white- red
  17. pharaon

    FM modulator light only and no transmitting

    can you tell me what type of this item is it IC or transistor
  18. pharaon

    FM modulator light only and no transmitting

    my car mp3 FM modulator was working fine this morning and suddenly it stop transmitting frequency and just give me light screen.. wonder if any one can help me about the item that cause that failure in the circuit. here's is some pictures of the modulator circuit.
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