[ICOM] relay in IC-761

[rrocket88 at netzero.net]

Ron, TR-6.. Wow.. Rare Bird There.. ( That probably left a grill mark)

Ok , I'm now exploring and measuring on my 761 that's in rebuild to incorporate forced air cooling for all. thanks for the 24v at 50% down idea. 

and back to the relay issue... I have been studying the schematic and cannot conclude how switching the att from off to pre and back to off restores the receive.. cycling the relay?? curious..

73, Randy K4IMZ

---------- Original Message ----------
From: bonddaleena at aol.com
To: icom at mailman.qth.net
Subject: Re: [ICOM] relay in IC-761
Date: Fri, 19 Nov 2010 16:48:11 -0500 (EST)


 Check this out... I took the 'hatch' (for adjusting the Tuner) off of my 761 and fabricated a small piece of aluminum which mounts a perfect size and 100% quiet, muffin fan. ALSO, I have another one inside blowing across the P/S heatsink. Both of these fans are 24 VDC and when run on 12 V are completely inaudible. However the case of the radio never gets much above room ambient.


I started this fetish about 12 years ago when I put my forearm across my beloved Drake TR-6 which had been on for hours working scatter. Remember that the TR-6 has 19 tubes in the small cabinet!

73

ron






-----Original Message-----
From: rrocket88 <rrocket88 at netzero.net>
To: icom <icom at mailman.qth.net>
Sent: Thu, Nov 18, 2010 10:55 pm
Subject: Re: [ICOM] relay in IC-761


Ron, No Problem and understand about "Misery Week". I have them quite often.
another item I noticed is that over the years some of the board mounting screws 
ere not snug so I went through the whole box checking them , just like a 
otherboard, heat expansion and age will usually show up as loose mounting and 
round points..
also : call me nuts, but I moved the speaker outboard to allow additional air 
irculation..  
But I love these old 76x rigs.
73, Randy K4IMZ
---------- Original Message ----------
rom: bonddaleena at aol.com
o: icom at mailman.qth.net
ubject: Re: [ICOM] relay in IC-761
ate: Thu, 18 Nov 2010 18:04:26 -0500 (EST)

Randy, if I already answered, please forgive me, it's been one of those weeks!
ou are NOT exaggerating the sensitivity of the problem. I tried 'lightly' 
apping around the radio trying to locate the general area that was problematic.
f I had not experienced the 'flea jumping sensitivity' of this problem first 
and, I would NOT have believed it.... ha ha
 am now going through the SAME type of problem on several Green Laser sights 
ounted on different rifles. MADDNING!!!!
ron
4UE


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----
Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/
To support QSL/QTH.net: http://www.qsl.net/donate.html