[ICOM] ICOM 706 MK IIG

[Tony Hwang]

John King via Icom wrote:
> Recently, I posted a request for technical help with my Icom 706 MKIIG  on the reflector and got ONLY ONE  response and it recommended that I send it to a repair facility for repair. I don't want a repair facility. I have been Licensed for 60 years, hold a 20 WPM Extra Class License and what was originally called a First Class Radiotelephone  license I used in the Broadcast industry.
>
> It seems that this reflector may only have Walkie Talkie operators and generally non technical memorized study material  Hams.
>
> I have three large rooms full of gear on the shelves from before WWII until present. I measure it by the tons. I personally work on some of it every day. I will soon be 80 years old and have little respect for button pushing programmers and Walkie Talkie operators. That is why I always state in my request for input "based upon your personal knowledge and personal experience" with the particular piece of radio gear.
>
> I have confirmed that the suspected broken trace on the PLL board is not broken or suffering from oxidation . I used a Fluke Ohmeter to verify that the trace was not open and that there was no  damage from chemical reaction.  I cleaned the area with alcohol, inspected it with magnifying glass and coated the area with Plasticoat.  I reassembled the radio. and it still would not fire up. There is a fuse on the board that is GOOD.
>
> I next purchased a NEW Connector and installed it in the front panel "head" of the radio and it still will not fire up.
>
> Before it stopped firing up. it would turn on intermittently and the intermittent firing up increased in frequency until the point when the radio would not turn on at all.
> I suspected the connector because when it first became intermittent at turning on, I could remove the front and replace and it would turn on.
>   
> There was No catastrophic failure such as buzzing or smoking. Out of a clear blue sky one day, it just wouldn't come on. I have no plans at this time to send it for repair anywhere. I am still trouble shooting it.
>
> Thanks and 73,
>
> John, K5PGW  "GROUCHY and IMPATIENT"
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
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Hmm,
The you are in a position to take care of your problem yourself, aren't 
you? I've benn ham for almost 60 years.
I do all repair needed myself. Even tho I am in VE land I passed US 
extra class exam. log ago.
ICOM power supply design is straight forward, an O'scope (analog or 
digital) may help trouble-shooting.
Good luck with your broken radio.
73,
Tony, VE6CGX