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View Full Version : Icom 706 mkllg T/R relay issue


WZ7U
09-09-2018, 12:10 AM
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
N8YX
09-09-2018, 07:03 PM
Do you have the service manual for the rig?
WZ7U
09-09-2018, 08:09 PM
I do not, but I see a time coming when I will need one.
N8YX
09-10-2018, 08:59 AM
Find an electronic copy and tell me the P/N for the relay they use.
WZ7U
09-10-2018, 08:44 PM
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...
WA4GSD
09-11-2018, 07:20 AM
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,
N8YX
09-11-2018, 10:12 AM
See if this is the relay in question: https://www3.panasonic.biz/ac/e/search_num/index.jsp?c=detail&part_no=AG201344

If so, commonly available at places like Mouser.

And what was the infraction that got you banned?
WZ7U
09-11-2018, 12:13 PM
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/ICOM_HF/IC-706MK2_serv.pdf
WZ7U
09-11-2018, 12:15 PM
See if this is the relay in question: https://www3.panasonic.biz/ac/e/search_num/index.jsp?c=detail&part_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.
WØTKX
09-13-2018, 07:13 PM
https://www.ratebeer.com/beer/living-the-dream-no-filter-wheat/341488/#!
WZ7U
09-16-2018, 05:24 PM
See if this is the relay in question: https://www3.panasonic.biz/ac/e/search_num/index.jsp?c=detail&part_no=AG201344

If so, commonly available at places like Mouser.

I used that number on Mouser but it came back borked. Have had no luck finding it on any of the places I have bookmarked for parts, but I have not done a google search for it yet. fyi.
WZ7U
09-16-2018, 05:24 PM
https://www.ratebeer.com/beer/living-the-dream-no-filter-wheat/341488/#!

I see nothing Dave. Bad link?
N8YX
09-17-2018, 08:51 AM
I used that number on Mouser but it came back borked. Have had no luck finding it on any of the places I have bookmarked for parts, but I have not done a google search for it yet. fyi.

Try here:

https://www.alliedelec.com/panasonic-ds1e-m-dc12v/70158600/?mkwid=sFabNEUri&pcrid=30980760979&pkw=&pmt=&gclid=EAIaIQobChMIqKiNg5fC3QIVgyZpCh2W3QoNEAYYASAB EgKFofD_BwE
WZ7U
09-17-2018, 03:20 PM
Wow, that's cool. Thanks man, I couldn't find it to save my ass. Funny thing is I first looked it up on the phone and I thought it said $4,640. I about shit! Then I put on my glasses and had quite the laugh.

I need to get that one coming right away. I'd like to be all set for winter before hand. For a change.
KD8TUT
09-18-2018, 07:37 PM
Wow, that's cool. Thanks man, I couldn't find it to save my ass. Funny thing is I first looked it up on the phone and I thought it said $4,640. I about shit! Then I put on my glasses and had quite the laugh.

I need to get that one coming right away. I'd like to be all set for winter before hand. For a change.

Yea... they are on sale this week for $2675.99