Uniden Pro520xl kaput?

Hi folks,

This may be beyond any novice repair but I got this radio for free so if it's within my capability I'd like to see if I can get this bugger working.
The radio is a Uniden Pro520XL sn. 893005322 mfg in Taiwan. The Ch. lights work properly and I can hear the familiar "pbt" when keying up, but no signal with a known good antenna within proximity of 50 ft of the monitoring rig.
I've taken the case apart and cursor look at the pcb there's no sign of burnt circuits or broken connections.

My interest in this radio is that it fits in a moulded console in the ceiling of his van. This 520 has a conventional 4 pin mic connection that is desireable, His 510 he kaputted by thinking the mic connection was a twist type when actually it was a 6 pin half moon type.

Has anyone else here tried diagnosing and repairing these little radios? Or should I just forget it?


Thanks and a lift of the lynch lid for your response.

 

Just as this is kind of a gift for my friend when I get it done, this project will give me experience in dealing with desoldering components from PCB and resoldering. I figure the more experience I gain, the less time I have waiting for my radios to get back from the shop.

 

I got the power transister out and I need to clean up the circuit board but that I'll have to do with some wire and my soldering tool as no one single hardware, welding or electronics store in this area has desoldering gear.

 

The reason I'm sticking with the 510/520 is that the conversion van's headliner consol juuust fits this radio's case. If I went with another maker it'd have to have the same width and height. Lots of depth room though, it's so deep I could fit my 53W in there.

 

I hear ya Rat,
I normally go the replacement route on small ecletronics, but as time goes on I like to take things apart and just see what I can do. So often I get lucky, by the Grace of God and it comes to fruition. So much so my wife got me a Life's Good t shirt "Mr. Fixit" hah!
As backup I've got another 520 comin' from Uniden for my buddy. This one so far has set me back $9 for the pwr. transistor, and $3 for some desoldering braid. Got the latter from Radio Shack after they told me they had no desoldering gear on the phone. Gotta love the next generation kids that have no work ethic.
Got the new transistor in place (had to trim the pins and custom bend them to the board) going to try my hand at soldering up and testing today.