[ICOM] My 745

[bonddaleena at aol.com]

Hi, I have tried every Mode. Typically, I use RTTY and hit the Transmit button. I am aware that if the radio is in SSB, there will be NO output, unless there is mic audio. I do not have the FM Module and I know the radio will only receive AM. I also know that Icoms of this vintage had cap "issues". When my shop was pack up, I bought a nice 761 with the same problem. Turned out to be bad caps. Transistors were ok. I have the necessary test equipment (ESR testers, etc), (and thousands of new caps!), but I don't have the time.......I have a hot rod and motorcycle that are calling me as well!! ha ha Summer is here in the Sunshine State!



ron
N4UE






-----Original Message-----
From: Larry Young <k4lxv at bellsouth.net>
To: ICOM Reflector <icom at mailman.qth.net>
Sent: Thu, May 27, 2010 5:46 pm
Subject: Re: [ICOM] My 745


Ron; any radio that sits for 25 years or so is bound to have deformed 
lectrolytic caps, oxide on the relay contacts or worse. Someone  will 
ystematically need to beginning with the power supply carefully go through it.
arry K4LXV
--- On Thu, 5/27/10, W5JMW <w5jmw at cableone.net> wrote:
From: W5JMW <w5jmw at cableone.net>
ubject: Re: [ICOM] My 745
o: "ICOM Reflector" <icom at mailman.qth.net>
ate: Thursday, May 27, 2010, 3:11 PM
Ron,What mode were you trying it on? If ssb or cw I am sure you checked the 
ower out (RF) and mic controls.If fm? does it have the fm bd? If am sorry.The 
45 won't do am.It receives am..Just some thoughts..73 john
---- Original Message ----- From: <bonddaleena at aol.com>
o: <icom at mailman.qth.net>
ent: Thursday, May 27, 2010 1:36 PM
ubject: [ICOM] My 745

 
 
 Hi. I have a 745 that I brought brand new. It has < 1 hour on transmit. (I 
ave a LOT of other radios). ha ha
 
 However, I recently went to use it and I have absolutely NO output. The 'red' 
transmit" LED comes on, but nothing, any mode.  The receiver, display and all 
ther functions are perfect, as usual. Thinking it might just be the internal 
eter circuit, I connected my Drake watt meter. Zip.
 None of the "Meter" positions on the 745 does a thing, in xmit mode.
 
 This radio has never transmitted into an open circuit and it is always 
isconnected from the antennas.
 
 Before I pull it off the desk and head for the repair benches, anyone have a 
lue?
 
 I did search the Icom "Knowledge Base" and the only thing close was a resistor 
n the regular unit. However, that should give a dead receiver as 
ell......Bloody 'crummy cap' problem?????
 
 Thank you!!
 
 ron
 N4UE
 
 
 
 
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our Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
com Users Net: Sundays, 1700Z, 14.316 MHz
com FAQ: http://www.qsl.net/icom/
o support QSL/QTH.net: http://www.qsl.net/donate.html
---
our Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
com Users Net: Sundays, 1700Z, 14.316 MHz
com FAQ: http://www.qsl.net/icom/
o support QSL/QTH.net: http://www.qsl.net/donate.html