It’s probably a relay in the output filter section stuck in the open or closed position. This is a 13 band radio and 7 filter segments, so it’s likely that the radio “builds” the correct filter out of the segments based on frequency selected. It’s also indicated by the bands that trip the power protection 20, 40, 80. That suggests a common element.
@temporarilyoffline4 ай бұрын
Very smart observation, thanks!
@Homer195214 ай бұрын
Full reset. Save all settings beforehand. SARTS in west michigan is the place to send it. Check the plug in line fuse connections. I eliminated those fuses (if not mobile). However, it seems the voltmeter on the radio stays above the critical (~10vdc) level when transmitting so they are prolly not the issue.
@temporarilyoffline4 ай бұрын
I didn't mention it here, but I did a full reset in the first vid where I found the problem. Thanks for the tip about SARTS, checking now.
@K5YVY4 ай бұрын
@@temporarilyoffline my 705 screen was replaced by the Michigan place. 3week turn around from left my to got back to my door. And he checked full alignment 😎
@temporarilyoffline4 ай бұрын
@@K5YVY Sweet!
@MikeN2MAK4 ай бұрын
@@K5YVY thanks, i just bookmarked that website since I'm bound to bork one of my ICOMS at some point, LOL
@HamRadioDX4 ай бұрын
A worthwhile check might be to lower the output power on HF down and see if it resets… if it doesn’t.. crank up the power until it does. If you get like… 30-50W out… before it shuts off… check for any high resistance joints or bad connections in the power lead.
@temporarilyoffline4 ай бұрын
Sounds like a plan!
@bb_374 ай бұрын
On late-model Icoms, pressing the PTT in CW won't generate any output. That just puts the radio into transmit, but you won't get any power output until you key the radio through the CW keying jacks. Just tried one of my IC-7100s (I have two). In CW mode, no output when PTT pressed. In RTTY mode, full output when PTT pressed. For that reason, I usually test radios for output using RTTY, FSK, or FM modes as they all should produce output when keyed with PTT. The IC-7100, like most Icoms, is sensitive to supply voltage. The fact that in your video, the radio shut down and the battery's circuit protection popped when you keyed in RTTY tells me that you don't have enough voltage or that the radio is pulling so much current when transmitting that the voltage drops so far that the radio's CPU resets. When you have the full metering screen displayed, there's a voltage indicator on the right ("Vd"). The scale has a solid line with ticks at the ends followed by a dotted line. If the voltage drops below the rightmost tick when transmitting, you don't have enough voltage. Adjust the power output level down from 100% to see if you can find a point where there's enough voltage on transmit to keep the radio from resetting. Possible sources of low voltage are 1. your battery can't deliver the current that you think it can or 2. there's a significant resistance in the power cable. As a test, put the radio in RTTY mode, dial the power output down to 25%, and then key the radio. If you get output, then you may have a problem with your battery. If the battery seems to check OK, look at your power cable. Any corrosion or frayed wiring at connectors could be a problem. The Icom power cables are notorious for fuse holder problems. Pull the fuses out, clean the contacts, maybe tighten the contacts a bit with needle-nose pliers, and put things back together to see if you eliminated the resistance and resulting voltage drop. If you decide to send it for service, SAR Technical Services in St. Joseph, Michigan, is an authorized Icom repair center. He's very honest and does good work. www.sarts1.com/
@rickrobinson8994 ай бұрын
To operate cw with a mic you must turn on the proper key setting in the menu. You probably know this but it doesn’t hurt to check that in your menu the key type is set for up/down on the mic.
@rickrobinson8994 ай бұрын
Fuses need cleaned. Scotch brite them even if they look good.
@temporarilyoffline4 ай бұрын
Fantastic tips - I'll check them out!
@davenewmyer37354 ай бұрын
If you decide to send it off, the ICOM repair in Michigan is who I would suggest. Besides repair, they can bring up the unit up to current specs.
@temporarilyoffline4 ай бұрын
Current specs is a good thing to know. Thanks for the tip!
@piotrstula860529 күн бұрын
Hi! Check out V/U PA transistor surroundings, possibly with magnifying glass and try to look through IR camera there. I have blown mine beacuse of joints temperature related deterioration. One of the early symptoms were slightly elevated SWR even on 50ohm dummy load and too high temperature when V/U transmitting. Next there was significant drop at V/U output like in this film. Grande finale was lotsa smoke and even flames during UHF chat and whole place when final MOSFET sits went carbonized (PCB also) with other elements unsoldered and blown into ash. This was probably due to prolonged FT8 operation on V/U and whole process lasted 2 or 3 years of continuous use. Not so significant changes at start but end was brutal - friend of mine managed to reconstruct PA but smell will last until ICOM company falls down the mud. My story is about V/U part of rig, HF will be probably another story, 73!
@temporarilyoffline29 күн бұрын
Thanks for all the info! I'll take a look!
@johnk80914 ай бұрын
Always check power out in RTTY mode, not CW (when using a microphone). The reason it powered off in RTTY mode is because your 12v supply cannot supply the required current. Hook up a good 30 amp power supply, in RTTY mode and retest
@temporarilyoffline4 ай бұрын
Great idea!
@kevinkc3onohelijeepworld9534 ай бұрын
Transistor checker will tell you gain. If you had one Mr BBI always checks his pills with one 😊
@temporarilyoffline4 ай бұрын
Hey Kevin! Thanks for the new channel to watch. I'm on it!
@mrradio21874 ай бұрын
I placed my 'Golden Screwdriver' next to my 7100 to serve as a warning I'm ready to do the unthinkable if necessary. Fear is a powerful motivator and failure is not an option!
@temporarilyoffline4 ай бұрын
Thanks for the encouragement!
@mrradio21874 ай бұрын
@@temporarilyoffline You can also place a photograph of your favorite voodoo priestess on top of the main unit overnight. A favorite among hams in New Orleans so I've heard. A few dried chicken bones and crows feathers increases repair success potential. Good luck!
@temporarilyoffline4 ай бұрын
@@mrradio2187 Thanks, Imma need all the help I can get!
@WECB6404 ай бұрын
Steve, from what I saw in the video it looks like a logic malfunction in the bandpass filter on the rig. If I'm reading it right, I also see that the ALC on the display is all the way up in both RX and TX. This could be the result of something external plugged into the rig and/or possibly a shorted component on the ALC buss line inside the rig. Listen to see if you can hear (or feel) the relays in the BPF (band pass filter) switching when you change bands in RX. At 3:37 looking at the PCB, I think I see a toroid (upper row on the left, next to the green toroid). The one on the left looks like it may have got hot, but I can't really tell from the camera angle. Look at it closely for discoloration under the windings. When you went to 40M and the rig shut down the battery, it would be good to see the radio display as we saw at the beginning of the video where it shows Id (drain current) on the bottom row. I'm presuming you don't have a DC clamp meter. Hope that helps. I know how difficult it is when you don't have all the test gear and a normal workbench available. If I can assist, you know how to reach me. 73 OM
@temporarilyoffline4 ай бұрын
Thanks Hollywood! I have learned a lot today and have some work to do.
@2EOGIY4 ай бұрын
You could check finals using transistor checkers; that is one thing. What I can see is an impedance short, something that shorts to ground at a specific frequency, an overheated core, and melted-down insulation on those transformers. Some caps nearby the finals or after the finals could dry out. I can only guess as I'm not familiar with that icon. Do you have any LCR that works with soldered caps? Remember to discharge them before measure.
@temporarilyoffline4 ай бұрын
Thanks for the tips. No LCR here yet.
@hpbear1014 ай бұрын
I had a similar issue with my 7200 key down on any band that was max output it would completely shut the radio down. I googled it, and it turned out to be mild corrosion just a slight tarnish) on my in line fuse of all things, seems to be fairly common. When running at max output there was just enough corrosion/tarnish to allow a voltage drop causing the radio to shut down. I pulled and re-seated the fuses and everything back to normal. I replaced the fuses just to start fresh. 73 DE N7BYD
@temporarilyoffline4 ай бұрын
Man, I hope it's that simple!
@45auto4 ай бұрын
That's a real shame. I really like my 7100 also. It needs the optical reader replaced so I'd like to hear about good repair shops.
@temporarilyoffline4 ай бұрын
Me too!
@JosephVE3GKT4 ай бұрын
Steve, the only thing I've experienced that can cause a shutdown like that is insufficient supply voltage. I've shortened my power cord to about 18". Reseat all your fuses including the internal yellow one and see if that helps. 73 VE3GKT
@temporarilyoffline4 ай бұрын
Thanks Joseph, it looks like the battery is shutting the radio off, not the radio shutting down on its own. Still digging, thanks for helping!
@Andy2e0ree4 ай бұрын
Ok Steve some good ideas but the first thing I check is the fuses the the earth on the board.Then in FM check 10 m after that is the 2 10k resisters on the out put .If you have to sent it back hope in warranty if not the board is about $400 73 brother
@temporarilyoffline4 ай бұрын
Thanks Andy! I knew I could count on you!
@dwhip493 ай бұрын
Completely unrelated department: As a career AF and one time crew-chief I am intrigued by the "Remove before flight" streamer that appears to have spent some time on the flight line. Meanwhile I was about to pull the trigger on buying one of these but think I will wait to see if you come up with a fix.
@temporarilyoffline3 ай бұрын
The streamer is from an F-14 steering damper and its attached to a canopy jettison handle. I worked for NorthGrum for a while on the F-14 program. Good times. The 7100 is a great radio, just make sure to test its power output on all bands before pulling the trigger. I'm pretty sure I'm the one that broke this rig.
@dwhip493 ай бұрын
@@temporarilyoffline That might make a good topic "How not to break your radio" Grumman Iron works good reputation. Remember seeing my first F14 on the ramp...from behind its just two engines with wings...
@temporarilyoffline3 ай бұрын
@@dwhip49 This /might/ have been a case of not having an HF antenna plugged in and the mic in the dash resting on PTT for too long... but I'm not honestly sure at this time. If I find an answer, I'll share.
@LanceVK6LK_AussieHam4 ай бұрын
Try TRX Lab “icom ic-7100 no transmitt on shortwave” looks like it might be the exact same problem. Lance
@N1ERA-734 ай бұрын
I just watched that video the other day.. I think you are right Lance
@temporarilyoffline4 ай бұрын
Thanks Lance. I'm a fan of TRX Lab!
@paulsengupta9714 ай бұрын
The TRX labs one looks to be no transmit on shortwave or 2m/70cm.
@acars999910 күн бұрын
An update on my IC-7100 that was having the same issue. I messaged ICOM and they recommended I do a factory reset, as have some of the commentors below. I was skeptical as it sounded like old PC Support line "run cleanup and do a hard drive defrag". But I did the reset and it fixed the radio. Moreover, I have had the zero TX power problem return at least two more times - including today. The factory reset fixed it both times. Today was odd. I was playing on FT8 with WSJTX on 12M, and logged contacts to Thailand and Russia, and then it just quit transmitting any power right after the last contact. It was trying to transmit - the TX/RX light on the radio was turning red. But my external meter showed zero power going out. If anyone can explain what is going wrong to stop the TX power until reset I would love to hear it. It sounds like ICOM should do a firmware update (I do have the latest). But I won't hold my breath.
@temporarilyoffline10 күн бұрын
Cheaper than a repair center!
@acars999910 күн бұрын
@@temporarilyoffline It just happened again 5 min ago. That makes twice today. Reset fixed it again.
@temporarilyoffline10 күн бұрын
@@acars9999 imma try to reset mine a few more times.
@KS0JD4 ай бұрын
My guess is the 2m/70cm probably uses a different set of finals. If it receives it means the oscillator is probably working correctly. With a scope and a schematic you could do some quick and informative troubleshooting.
@temporarilyoffline4 ай бұрын
I guess I'd have to get the scope out and start working!
@BobbieCook-wo8jl4 ай бұрын
replace the fuses even if they appear good. i had the same trouble with a ic756 and it was the fusses.
@temporarilyoffline4 ай бұрын
oh, that's super weird! I'm on it!
@rickrobinson8994 ай бұрын
Yes. Clean with scotchbrite even if they test good. An invisible film can creat a few ohms resistance which will result in low voltage to the radio.
@temporarilyoffline4 ай бұрын
@@rickrobinson899 makes sense, thanks
@robmccray63604 ай бұрын
I had a similar situation on field day, but it was due to going back and forth between digital and SSB and it was not keying up on SSB. Check your MIC USB and ACC settings just to be sure.
@temporarilyoffline4 ай бұрын
I did a factory reset... but it could have still remembered these settings. I was messing with the MIC USB/ACC settings prior to this problem happening.
@robmccray63604 ай бұрын
@@temporarilyoffline Wish I could be more helpful, but I fiddled with mine for about an hour to the point that I completely forgot which setting I magically changed to make it work. But it was definitely not keying the SSB because it was expecting the computer to key the radio for digital signal.
@temporarilyoffline4 ай бұрын
@@robmccray6360 Naw man, that's perfect. I know the setting!
@robmccray63603 ай бұрын
@@temporarilyoffline Did you ever get resolution on your IC-7100 issue?
@temporarilyoffline3 ай бұрын
@robmccray6360 not yet. Still on the filming/test bench. We're gonna do this in real time.
@davidm.wilson37364 ай бұрын
Hi Steve, Omg😢hoping it’s nothing serious. Be safe have a good weekend. By the way my first radio will be a ft- 891 due to the pricing of ICOM Radios in Australia. Ageing hoping the radio is nothing serious David. VK2AAW
@temporarilyoffline4 ай бұрын
Thanks David. The 891 is a great radio.
@LeeMcc_KI5YPR4 ай бұрын
First, try to get a service manual with schematic. Icom had one for my IC-7000 online. Are the drivers MOSFET or bipolar? Knowing that while ohming helps. Are the filters series cap or series inductor? Maybe a bad cap in a filter. Some bands pulling power down suggests filters. [ETA] Band filters are bandpass, but check filter caps for shorts [/] The 100ah battery probably allows 100A which is crazy; I would expect massive smoke...unless a finals transistor is already slag. Its amazing how much current a melted power transistor can take. And they don't get hot because its a short (this from someone who has debugged many comple multi-phase switching supply failures).
@temporarilyoffline4 ай бұрын
Thanks for the tips, I'll dig in
@victorcharlie74914 ай бұрын
All's well that ends well, tnx man!
@temporarilyoffline4 ай бұрын
This will end well, of course
@keithfrost12684 ай бұрын
3 things that will cause it to shut down or reboot. Low voltage, Bad Cable(yes, they go bad) from head to radio body, and RF coming back up the cable
@temporarilyoffline4 ай бұрын
Great tips!
@AndyAAzeroAM4 ай бұрын
Is it the same battery set up? Probably not the battery but I like to eliminate things. Especially easy things to test. Be nice if it was a battery issue instead
@temporarilyoffline4 ай бұрын
In my case part 1 was car battery. Part 2 is battery in house.
@paulsengupta9714 ай бұрын
@@temporarilyoffline Maybe try the car battery again and see what gets hot! ;-) Maybe not the best approach...
@temporarilyoffline4 ай бұрын
@@paulsengupta971 More isn't always better 🤣
@paulsengupta9714 ай бұрын
@@temporarilyoffline Be sure to use a 20A fuse...you don't want too much smoke to come out.
@AniruddhaBokilVU3FML4 ай бұрын
Oh man...that sucks! I am sure you will get it up and running soon!....I may be way off and also i am no expert, but just to help...is it possible that the hf so239 has developed a bad solder joint due to some reason? Or i guess you already checked that...let us know how it turns out.
@temporarilyoffline4 ай бұрын
Its possible - but this was also a different coax than last time. Good tip!
@dnssigns4 ай бұрын
Full factory reset. First thing to try. No love there then probably have to go back.
@temporarilyoffline4 ай бұрын
Smart Idea! First thing I did a reset at the park... still need to dig some more. It might be going back though... we'll see! Thanks for watching.
@KA4UPW4 ай бұрын
If a complete reset dosent work, there is a predriver before the PA (finals). Check it before looking at the finals
@temporarilyoffline4 ай бұрын
Excellent! Thanks
@KA4UPW4 ай бұрын
@@temporarilyoffline The early IC-7000s had this problem. Not aware of it carrying over to the IC-7100 though
@Siskiyous64 ай бұрын
I hate it when that happens, I loved my 7100, you already knew that. One is none though.
@temporarilyoffline4 ай бұрын
In this case, none is none
@signalscout60204 ай бұрын
Well daggum.
@temporarilyoffline4 ай бұрын
Right!
@aa3konthego4 ай бұрын
Have youtried in CW or RTTY modes? SSB produces minimal power out unless there is modulation input. Went to use the 706 in my truck on 70cm FM the other day and nothing to my YL standing 30 feet away. No receive either. Need to dig into that now.
@temporarilyoffline4 ай бұрын
I did both CW and RTTY.
@aa3konthego4 ай бұрын
@@temporarilyofflineIn the immortal words of Star Trsk, "It's dead, Jim!"
@temporarilyoffline4 ай бұрын
@@aa3konthego Right, KZbin won't let me say that... but you can 😀
@thebnbaldwin4 ай бұрын
I would have tapped on any relays, and just poked around the finals with a voltmeter, keyed and un-keyed. A RF voltmeter and schematic would be nice to have!
@temporarilyoffline4 ай бұрын
Good tips! Just starting the journey and bringing everybody along.
@tonyd68844 ай бұрын
that's very unfortunate. I like having the 7100 in the truck. I hope it's nothing major.
@temporarilyoffline4 ай бұрын
Me too. Thanks
@DonzLockz4 ай бұрын
I have no idea, but send it to me. I'll get it fixed and keep it.👌😂
@temporarilyoffline4 ай бұрын
Sure, that will be $1500US in shipping! 😂
@user-yq1mh8ij9k4 ай бұрын
Did you try turning the power down to 10 watts to see if it worked at lower power?
@temporarilyoffline4 ай бұрын
No, good call!
@Superacerc4 ай бұрын
Perhaps when the relay connects for transmit on HF finals it's showing then... But without relay activated you can't see the short.
@temporarilyoffline4 ай бұрын
That makes sense, thanks!
@Ei2iP4 ай бұрын
Me thinks you are looking into space when you look into that radio
@temporarilyoffline4 ай бұрын
I hope I can bring it back.
@KeepEvery1Guessing4 ай бұрын
I'm suspicious of the band select relays, i.e.; maybe one is hung up. Ohm meter?
@temporarilyoffline4 ай бұрын
I'll check. Thanks for the tip!
@M0WWS4 ай бұрын
Icoms like 13.8v on transmit. Try it on a PSU not a crappy amazon LIPO 12.8v battery.
@temporarilyoffline4 ай бұрын
Do you have a non-crappy PSU you recommend?
@mikezagorsky4 ай бұрын
A few dumb checks...did you try FM on HF? Did you check that mic was not set to USB or ACC (which it can do other than data mode).
@temporarilyoffline4 ай бұрын
I never really think about FM on HF. I should do that more often. Checking the mic settings is on the list!
@Homer19521Ай бұрын
So did I miss the resolution??
@temporarilyofflineАй бұрын
Not yet!
@SuperSuperGenius4 ай бұрын
Check your PA board.
@temporarilyoffline4 ай бұрын
Good Call!
@mezzoono4 ай бұрын
send it to TRX Lab
@temporarilyoffline4 ай бұрын
Oh yeah, he'd get it fixed!
@acars99992 ай бұрын
I bought one of these in May and I hate it! It has piss poor output power, between 5-20 watts. And they should be embarrassed to try to sell this thing for $1200 with a display that is roughly as good as a 1990 Gameboy. Does Icom have any products released in the last 10 years?
@temporarilyoffline2 ай бұрын
They don't really, but yours is under warranty, get it fixed... It's DOA
@acars99992 ай бұрын
@@temporarilyoffline I plan on it. But if they let this POS out of the factory with clearly no QC, how long will it last? Chinese crap performs better.
@temporarilyoffline2 ай бұрын
@@acars9999 unfortunately they are all about the same. I can't tell you of a radio that hasn't had QC problems out of the gate. This is where we are: ripe for a take over by somebody that is technologically superior!
@RudixSA4 ай бұрын
Looks like you were keying the mike on HF, on SSB or CW that won't produce any output. Put it in FM mode an repeat.....
@temporarilyoffline4 ай бұрын
That's a good tip. I'll double check those parts where I did CW - I'd guess that the radio would power off on all modes that way.
@RudixSA4 ай бұрын
@@temporarilyoffline The powering off is another issue, might not be related to the lack of output. The current draw exceeded the max allowed by the BMS so it was actually the BMS powering off not the radio. Try on FM but start at lower output and work your way up. If you have a way to measure the current draw that will give you an idea if the radio is drawing excessive current or if the BMS is simply cutting off early to protect the (maybe low on charge) battery.
@temporarilyoffline4 ай бұрын
@@RudixSA I do have a way of testing that and I get what you're saying. I'll test it out.
@phillyedhrj4 ай бұрын
...turbines to speed. Roger. Ready to move out.
@temporarilyoffline4 ай бұрын
Holy Magic Smoke, Batman!
@user-zk2yd6xm8s4 ай бұрын
You forgot to use one of your most important senses, that huge nose that you keep tapping
@BrianFields4 ай бұрын
After I disassemble the first test is the visual scorch inspection, the second is the sniff test!
@temporarilyoffline4 ай бұрын
Absolutely correct. Nothing smelled burnt here.
@DK5ONV4 ай бұрын
Well...Radios having Feelings too. Sometimes they are moody and not feeling up to go for a Job at all. Don't laugh....
@temporarilyoffline4 ай бұрын
I have mechanical empathy... My wife laughs at me when I say that too, but it's true.
@Sidmi5utc4 ай бұрын
Have you tried the radio connected to a power supply other than the battery ?
@temporarilyoffline4 ай бұрын
I have not. I don't usually use a power supply... this is the second battery, so its not "this battery".
@Choppus134 ай бұрын
Problem is it's an icom
@temporarilyoffline4 ай бұрын
Oh, good thing it's the only one I have left!
@Beaksnout4 ай бұрын
Nothin a little bondo and duct tape won't fix. U checked the gas right?
@temporarilyoffline4 ай бұрын
This one takes diesel... I'll check
@geodude9537Ай бұрын
ok when do you tell ud what was wrong with it??? lol
@temporarilyofflineАй бұрын
Not yet! Still working on it.
@nr3rful4 ай бұрын
I think you need a new Flux capacitor
@temporarilyoffline4 ай бұрын
Probably should get 2 while I'm at the store.
@forgetyourlifeАй бұрын
So……ah…whut was wrong?
@temporarilyofflineАй бұрын
Not yet... Need a workbench to dig into it more.
@kennethrkennedy4 ай бұрын
Here is a repair for a very similar issue. kzbin.info/www/bejne/pHiyp3iFmtF3itEsi=cEVdt8R7MZgwTs9t
@temporarilyoffline4 ай бұрын
Thanks! Its in the queue
@Echelon_Sky_Denver4 ай бұрын
You really have no idea what you are doing, do you?
@temporarilyoffline4 ай бұрын
I know what I'm doing, but it's clear that you don't know what I'm doing.
@cornbread-KO5RN4 ай бұрын
@@temporarilyoffline WHAT We’ve got hear is failure to communicate 😂
@cornbread-KO5RN4 ай бұрын
@@temporarilyoffline AH HECK I MUST BE GETTING OLD THAT IS SO FUNNY I ALMOST SPILT MY COFFEE, could’ve used one of those new fangled spill prof mugs 😂in firecracker pink
@cornbread-KO5RN4 ай бұрын
@@temporarilyofflineYou a crafty one stranger I know what your doing getting out of that honey do list 😂
@temporarilyoffline4 ай бұрын
@@cornbread-KO5RN A wise man once said: "You've got to know when to hold 'em..."