Ham Radio - ICOM 706MKII with failed front panel buttons repaired
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- Опубликовано: 6 сен 2024
- I had to replace two of those tiny surface mount button switches. Apparently they're not too robust. Be gentle with your Icoms!
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Hit me up on the echolink repeater down by my house: W9TE (Node: 519521)
Thanks for the tip Kevin! Had an old HT that served as the donor for the power switch!
When I have to desolder a SMD component with two legs like that, I find it easier to just add a little extra shoulder and use the iron to heat up each leg quickly while applying gentle pressure from the side with tweezers to move it off the pads. Solder braid doesn't work with SMD parts. There's always a little solder left under the leads, as I'm sure you found out.
Yep. Solder braid was not the way. I don't think my hands are steady enough to move the tip quickly from one side to the other though. But tweezers to pull upwards just a tiny bit might have worked a bit better. I'll keep that in mind for the next one.
Kevin Loughin, heh I hear ya. You'd be surprised by how slow a big solder blob is to solidify ( when it's not silver solder ). I should have made that part more clear... Leaded solder is the key, good ole 60/40. There's also this product called Chip Quick, it's a special low melt temp alloy designed specifically for what you were doing there, for people without special SMD rework tools who only see themselves doing SMD work once in a blue moon.
Two soldering irons work well in a pinch. But the blob of solder works well also.
Yep, I always use 2 temperature controlled irons with conical bits, for ANY 2 lead smd removal. Then, not to lose it (!), I just flick the component into a small wooden container on the bench. If you can't afford another iron, you can wrap thick bare copper wire around any tip with parallel sides, cut the free ends the same length, and space them the width of the smd solder tabs. Tinning the ends with a small amount of solder before use also helps.
Very interesting. Never worked on surface mount stuff. Need a steady hand. Tks for sharing this fix.
I've all ways use 2 soldering iron to take out smd switch I find it lot easier Great radio nice job there.
I used to work at a company that produced boards for other companies. What I would do with SMDs like the switch is to use two irons and use them kind of like really awkward chopsticks (one in each hand).
thank you very much I have to do that my 706 I hope works as good .you made it look to easy Thanks
Great repair job, Kevin. Nicely done. Thank you for posting it. 73 DE K7RMJ Frank
Interesting video. I used the ICOM 706 II some years ago and it was a really nice radio :-) 73
Thanks, that was useful in all sorts of ways.
73 from UK🇬🇧
Les
How did you get the board out of the case???? That's what I needed to know. Thanks.
yes it this is a few years old but it show whatis wrong with my ic706 and how to fix it at least how to fix that part of the problem Thanks you
One thing I have learned from your videos is WHO TO SEND the radio to to get repaired. :-)
I would use a hat pin (L O N G needle) or your razor knife to move the switch around to orient it properly.
Moe k2jdm
Thanks for the great video. Can we send you some tweezers?
My 706 has kinda the same problem I think, it won't switch off...
Perhaps u can helped me Sir..the knob of my IC-706 MK2 is not working..i cant turned it to adjust freq..is there any settings or way to fix this?
it turned out VFO encoder broken..so u know replacement for it?it has been discontinued
Sorry, but no, I don't know of a source. You might look at the specs of it and hunt around on digikey, mouser, and others for something similar.
Get some tweezers ;) OR Get some bandages and ointment for burnt fingers ;)
hi i have problem to pull out the vfo knob. i don't understand the right way to pull out it. on the service manual i didn't see the solution, on the first time i think there was a screew, have you an a good idea for me? thanks
I can't remember that one. Most will have a hidden screw under the rubber grip ring on the knob.
I have a 706 with a dim display. Fixable?
i am working on mine as well but want to know how did you get the vfo knob apart. I need to clean the lens on mine which turned smokey black on the inside
As I recall, there's a grub screw hidden under the rubber grip ring. The rubber slides off the metal knob.
OK WILL CHECK THIS OUT
I'd like to know where to buy these switches.
I lack the junk pile...
73 DE KD5FUL
I just bought some on ebay. www.ebay.com/itm/10x-10pcs-6-3-2-5mm-Surface-Mount-Tactile-Pushbutton-6x3-Switch-SMD-Tact-Micro/252838999704?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
Good job :-)
Do they still make these babies?
Sam Iam, they do not. The IC-706 MKII was replaced by the MKIIg which in turn was replaced by the IC-7000. The MKIIg is a superior radio in my opinion. If you can find a decent one at a price that does not include any "nostalgia factor" (cf., Kenwood TS-830s). and is in decent shape, by all means pick it up.
do not try this on a ft 817 send it to yeasu the switches a 4 times smaller 73 kg6mn
I hope they are also more durable. I've had an 817 for many years and it still works perfectly.
Why would you give an expensive radio to someone else to pack the mind boggles,