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VX-4207 Blowing Main Power Fuse

b18c_ej8

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Full disclosure - I'm not a bench tech, so sorry if this is a stupid question.

I've got a VX-4207 that instantly blows the 15A fuse on the main power to the battery as soon as it's connected to the radio. I'm assuming there's some sort of protection diode somewhere that is shorted to ground, but again, I'm not a bench tech.

Just curious if anyone's run into a similar issue?
 

mmckenna

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Full disclosure - I'm not a bench tech, so sorry if this is a stupid question.

I've got a VX-4207 that instantly blows the 15A fuse on the main power to the battery as soon as it's connected to the radio. I'm assuming there's some sort of protection diode somewhere that is shorted to ground, but again, I'm not a bench tech.

Just curious if anyone's run into a similar issue?

No experience with that specific radio.

However, I had a Motorola Spectra that would do that at work. At some point it was hooked up backwards. There's likely a big diode in your radio that took the brunt of the damage and will need to be replaced.
 

KevinC

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I used to love it when people would just snip one of the leads to stop the fuse from blowing. Works fine until you reverse polarity again, then the repair bill goes way up.
 
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