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connex 3300 low rx

Posted: Saturday 8th Mar 2008, 14:14
by farmboy
I have a connex 3300 that has very low recieve volume, I have replaced audio amplifier, checked transistor17 checked diodes 23 and 24 also checked diodes 15& 16, any body have any ideas

Posted: Saturday 8th Mar 2008, 14:17
by Smitty
Have you tried another radio on the same antenna/coax?

Posted: Saturday 8th Mar 2008, 14:20
by farmboy
yes I have tried another radio on this antenna works fine, also tried plugging an external speaker still a very low volume

Posted: Saturday 8th Mar 2008, 14:22
by Smitty
ok, I just wanted to narrow that down. I myself don't know the problem, and it might be a multitude of things. I'm sure someone will come along with better help

Re: Connex 3300 Low RX

Posted: Saturday 8th Mar 2008, 21:27
by Rick
The fault you have is it low audio volume or low RX? Is the S/Meter showing a good signal?
What is the PCB number?

Posted: Sunday 9th Mar 2008, 0:01
by farmboy
very low recieve, the s meter works fine printed circuit ept360014b

Re: Connex 3300 Low RX.

Posted: Sunday 9th Mar 2008, 2:14
by Rick
Is the RF Gain working? if not try replacing D15 and D16, there diodes must be the right ones,they are 1SS53 it would also be an idea to change TR17 2SC1674.

If the RF Gain is working, try replacing D23 and D24, they are 1N60.

connex 3300

Posted: Sunday 9th Mar 2008, 15:53
by farmboy
thanks rick when I went to take d-23 out of circuit I pulled the wire out of the glass part on the 1n60 diode that was what the problem was replaced worked great recieve back again full blast thanks again I have some tough dogs we will fix them later