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Thread: Icom 706 mkllg T/R relay issue

  1. #1
    "Usual Suspect" 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
    "Usual Suspect" 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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  4. #4
    Administrator N8YX's Avatar
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    Find an electronic copy and tell me the P/N for the relay they use.
    "Everyone wants to be an AM Gangsta until it's time to start doing AM Gangsta shit."

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    "Usual Suspect" 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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  6. #6
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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?
    "Everyone wants to be an AM Gangsta until it's time to start doing AM Gangsta shit."

  8. #8
    "Usual Suspect" 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
    "Usual Suspect" 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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    Whacker Knot WØTKX's Avatar
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    Last edited by WØTKX; 09-16-2018 at 09:30 PM.
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