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Thread: Icom 706 mkllg T/R relay issue

  1. #1
    Forum Addict WZ7U's Avatar
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    Angry Icom 706 mkllg T/R relay issue

    Hey all,
    I've had this 706 llg since birth and it has always had an intermittent issue with the T/R relay (my guess) not completing the connection back to receive. Now that I have this GG amp it seems to do it quite regularly when I try to use the amp. As always, if I rapidly key/unkey the mic it will eventually let the receive audio back to the speaker. Which is a bitch when you're trying to copy your report in the contest.

    Have any of you had a similar experience with your Ickum and what did you discover was the fix? I can't remember the relay number as I'm typing this but I looked it up at one point off of the schematic or the flow chart, can't remember which. It sure is a PITA and it does it more now even without the amp, which tells me it's going to crap out when I'm getting P5 or some other ATNO. Ideas, suggestions, help? I want to touch the brains I trust here before I go spending any money and/or damaging my rig. Me and golden screwdrivers have bad juju.

    Thanks ahead of time, 73 Eric WZ7U
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  2. #2
    Administrator N8YX's Avatar
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    Do you have the service manual for the rig?
    "Everyone wants to be an AM Gangsta until it's time to start doing AM Gangsta shit."

  3. #3
    Forum Addict WZ7U's Avatar
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    I do not, but I see a time coming when I will need one.
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    Administrator N8YX's Avatar
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    Find an electronic copy and tell me the P/N for the relay they use.
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    Forum Addict WZ7U's Avatar
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    Well, somewhere I had all that figgered out beforehand when I had more solid intel. Now, I had to go and actually look at the schematics and flow chart to try to figger it out. Near as I can tell, the offending relay should be RL1. They call it an order number (weird) of 6330001330, description of AG201344 on page 78 of the service manual pdf. RL's 2-3 and RL's 4-16 are different yet all these reside on the Filter Unit board. Near as I can tell, RL1 is the suspect.
    I can send you a copy of the pdf if interested. Just need to know where to. Thanks for chiming in Fred, appreciate it!

    oh, got myself banned from eHam again. I think I'll let it stand this time. Not sure I want to add to their traffic count anymore, bunch of trolls...
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    If you find a pdf version of the service manual, can you please post a link to it? I too have a MKII and would like to have it available.

    Thanks,
    Dan - N3XJN
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  7. #7
    Administrator N8YX's Avatar
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    See if this is the relay in question: https://www3.panasonic.biz/ac/e/sear...rt_no=AG201344

    If so, commonly available at places like Mouser.

    And what was the infraction that got you banned?
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  8. #8
    Forum Addict WZ7U's Avatar
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    Quote Originally Posted by N3XJN View Post
    If you find a pdf version of the service manual, can you please post a link to it? I too have a MKII and would like to have it available.

    Thanks,
    Found this - http://www.radiomanual.info/schemi/I...06MK2_serv.pdf
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  9. #9
    Forum Addict WZ7U's Avatar
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    Quote Originally Posted by N8YX View Post
    See if this is the relay in question: https://www3.panasonic.biz/ac/e/sear...rt_no=AG201344

    If so, commonly available at places like Mouser.

    And what was the infraction that got you banned?
    Kewl! I will check it out.

    Uh, this link posted in a thread - https://www.youtube.com/watch?v=zlla-AZhYeA

    Heh heh. Not sure what came over me. Oh well, no big loss.
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    Last edited by WTKX; 09-16-2018 at 09:30 PM.
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