Uniden Washington Keys Up, No TX & No RX

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Scarecrow
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Uniden Washington Keys Up, No TX & No RX

Post by Scarecrow » Thursday 7th Feb 2008, 15:26

This radio powers up but there is no RX and Tx... Keys Uo and Needle swings as you modulate but will not transmit and also will not recieve... On SSB Mode the needle doesn't move and still Has No TX & RX... Any help would be appreciated...

73's

ramblingman
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Post by ramblingman » Sunday 10th Feb 2008, 16:54

check ic-5 and d-60

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frogman296
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Re: Uniden Washington Keys Up, No TX & No RX

Post by frogman296 » Monday 2nd Mar 2009, 7:45

where the devil is d60??

i cannot for the life of me see that diode

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The Defpom
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Re: Uniden Washington Keys Up, No TX & No RX

Post by The Defpom » Tuesday 3rd Mar 2009, 14:42

D60 is mounted between pin 2 of the MB3756 and 0V, it is on the track side of the PCB, it was a factory addition, to help protect the device, not all radios have it in place, if not add it.

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frogman296
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Re: Uniden Washington Keys Up, No TX & No RX

Post by frogman296 » Tuesday 3rd Mar 2009, 18:13

The Defpom wrote:D60 is mounted between pin 2 of the MB3756 and 0V, it is on the track side of the PCB, it was a factory addition, to help protect the device, not all radios have it in place, if not add it.
so its a 1n4004 type?? or a 1n4148??

so i solder it from pin 2 to chassis ground??

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The Defpom
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Re: Uniden Washington Keys Up, No TX & No RX

Post by The Defpom » Tuesday 3rd Mar 2009, 18:20

It should be an 18V Zener diode.

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frogman296
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Re: Uniden Washington Keys Up, No TX & No RX

Post by frogman296 » Tuesday 3rd Mar 2009, 18:28

The Defpom wrote:It should be an 18V Zener diode.
stripe towards the IC??


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frogman296
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Re: Uniden Washington Keys Up, No TX & No RX

Post by frogman296 » Tuesday 3rd Mar 2009, 20:18

thanks scott

much appreciated

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