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Salty_bones
New member
Username: Salty_bones

Post Number: 5
Registered: 5-2005
Posted on Saturday, June 11, 2005 - 5:15 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I have a Uniden 520XL that just lights up and has no TX or RX. I also have a Uniden 510 that works great but the channel slector is out and you can't tell what channel your on so I was going to use this radio for parts to fix the 520. I was needing to know what part or parts is more than likly causing NO TX/RX and where the part or parts are located in the radio. I was thinking that its part C2166 thats got the Heat Sink Compound on the back side of it with a screw in the back of the radio. Any help would be great. Thnaks for you help.
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Sonoma
Intermediate Member
Username: Sonoma

Post Number: 191
Registered: 11-2001
Posted on Saturday, June 11, 2005 - 10:01 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

the 2166 is the final .it is your transmit .
on the side of the radio should be a voltage regulator and a audio chip.check to see if you have voltages there.I can not help more than this for I have not seen this radio.
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Salty_bones
New member
Username: Salty_bones

Post Number: 8
Registered: 5-2005
Posted on Sunday, June 12, 2005 - 1:53 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

The radio is a Uniden Pro 520 XL and on the board it says that its the 1987 model. I replaced the C2166 and now it is trying to do something. One the meter the lights are coming on with some signal so its recieving now but I can't hear anything coming from the speaker. Also the radio is now keying down but I have no audio. What else do you think needs to be replaced? I am taking the parts out of a Uniden Pro 510 they are just alike with the same board. The only differnce that I see is the Pro 520XL has a RF Gain. Thanks for any ideas.
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Sonoma
Intermediate Member
Username: Sonoma

Post Number: 192
Registered: 11-2001
Posted on Sunday, June 12, 2005 - 7:08 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

check the voltages at the audio chip mounted on the side of the case.I do not have any info on this radio at all.I will look arund for you also.

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