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President uniden hr 2510 ham radio

Recieve no transmit hr 2510

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  • potts024 Nov 30, 2008

    i have the same problem. Got this 2510 and everything works great but no tx. it does rx. any help?



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I know these are old posted questions but here are some new answers..... Simplest first! Make sure the TX button is not engaged, if it is then the radio will not work correctly.
Second would be a bad final or driver, this is a tough fix as these parts are tough to find, the parts are no longer made. A fix has been devised using MOSFETs but I have little details on this.
Third but not last is to do with age and environment, a glue was used to stabilize parts to the boards, wire and coils typically. This "glue" will break down over time and exposure to moisture and become conductive, shorting out parts and also corrosive, making copper wire and traces come apart.
Lastly, incorrect bracket knobs with screw threads too long can actually "crush" the PC board and break the PC copper traces.
Dropping the radio is not good, cracked boards and broken wires in hidden places.
Repairs can be made on all these but you need a tech that has experience to find these.....

Posted on Apr 06, 2010

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Posted on Jan 20, 2010

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The problem with 2510 radio is being left in tx mode . the transmit button.bought one on ebay parts or repair finals burned up plus other three 2510 boards off ebay same thing .i had to pay my repair tech 50.00 bucks for a transmit final. oh well hellcatcher

Posted on Jan 18, 2010

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Can be caused by many things. Usually the first thing to suspect is blown power output transistor/s. Was the radio transmitting into a properly matched load? ( ie. an antennea designed for the transmit frequency) and was the VSWR monitored?...pretty obvious stuff for Hams to know...

My 2510 started to have xmit problems that surfaced as audio/transmit signal quality problems...than soon progressed to no RF. I dont know if this rig is subject to occsillation problems...I have also heard that this problem is often causede by a capacitor goinng bad inthis model..probably an electrolytic..but I dont know which one...I have not dug into my set yet, but signal tracing the problem would be a good start.

Posted on Jul 03, 2009

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Posted on Jun 15, 2009

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Hi Darrel,

Since you didn't say if you have ever used this radio successfully before, I have to assume it is "new to you" and that you have never seen it work or used one like it before. Start with a few basic settings below:

Turn Squelch to minimum.
Set RF Gain (if present) to maximum
Set Mode to AM or FM
Set volume to 1/3 up
Connect to 50 ohm dummy load.

Turn power on. Hopefully you hear static. If not, try SSB or FM. Still nothing? Try connecting to an external speaker.

Chnage back to AM or FM mode. Key mic check & for transmit indicator. If none, change mic or manually short the PTT contacts in the mic or at the radio to see if it can be made to xmit.

If no xmit - insert SWR meter between xmitter and dummy load. Try to xmit on AM or FM again while watching SWR forward power, if none indicated, xmitter is probably defective.

Replacing parts in a xmitter is not recommended. You'll need an FCC license and a fair amount of expensive test equipment to test repairs, set power levels and deviation and perform an alignment to be sure you aren't causing interference on other frequencies and bands.

You'd be better off bringing it to a radio repair shop for repairs and an alignment.

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