#73 Modification for Driver Board ICOM IC-7000 to prevent burnig off

[@anatolygrebnev2741]

Thank you for the wonderful video, I also had to deal with the driver but the shawl had to make from scratch. Sincerely,Anatoly R9FF 73!

[@TRXLab]

Thanks for watching Anatoly 73

[@berndb.5097]

Mit so einem IC-7000 hat man nie Langeweile :-) Wie immer, gute Arbeit. Es macht immer Spaß zuzusehen.

[@TRXLab]

+Bernd B. LOL, ja das stimmt, ein IC-7000 steckt immer voller Überraschungen. Vielen Dank für die Rückmeldung und den Kommentar. 73

[@KD0LRG]

Icom service told me the same thing a few years ago when my 7000 went up in big ball of smoke. I ran it by the engineers in our club and they agreed that the radio most likely went into self destruction. It didn't blow the fuse and thankfully it wasn't mounted in the car as I was able to cut the power and throw the smoking radio outside. To say it let the magic smoke out was an understatement.

[@TRXLab]

+KD0LRG Yeah that is really a bad serious issue. Hope your radio is now working without problems! Thanks for comment 73

[@fredbos5997]

Well done! Nice repair + modification!!

[@TRXLab]

Thank you

[@TheRadioShop]

Thanks for sharing that tip. Maybe this will keep those driver boards in check. Big thumbs up from me as always.Thanks my friend

[@TRXLab]

+The Radio Shop Thank you Buddy! 73's

[@PapasDino]

The "Peak" testers sure are neat, I treated myself to a set of the LCR/ESR/Zener and component testers recently. Make life much easier at the workbench! 73 - Dino KL0S

[@TRXLab]

+Dino Papas Hi Dino, yes agreed this little meters make really life so much easier at the workbench! 73

[@harbselectronicslab3551]

The new one with usb is just awesome.......great for curve tracing as well

[@iw0hex]

Now I understood 1 ohm resistor on PD55015's gate for IC-7000 final stage. Thanks for your video and news !!! 73s de IW0HEX Pasquale.

[@TRXLab]

+Pasquale IW0HEX Hi Pasquale, yeah this funny 1Ohm resistors can be so helpful :-) I wish you a quiet x-mas season! 73's

[@MrCarlsonsLab]

Thumbs up!

[@TRXLab]

+Mr Carlson's Lab Thank you Paul!

[@OrbiterElectronics]

Very good again Peter & nice mod. Self oscillation is a funny thing. But not when it is destroying components :)

[@TRXLab]

+orbiter8 (John) Hallo John, thanks for comment! Agreed self oscillation is a funny thing.. Take care!

[@zeehellusay]

Wow, you make my soldering look like a five-year-old's attempt at road building in the sand box. I guess it's time to buy something better in the heating department. Watched several of your videos and Will be subscribing too.

[@TRXLab]

+Nunya Bizness Hi Nunya, thanks for feed-back. Yes good soldering/ rework tools are key. Thanks for subscription! 73

[@loydsa]

Hi great video thank you for making and posting it. It would have been helpful for me at least to see how you soldered the resistor in place without effecting the mosfet? I presume you used solder paste on the mosfet pads and the hot air to flow the solder, did you do the same with the resister and then put a solder bridge in to replace the trace?

[@bigchew3149]

Are You Still Doing This kind of Work Now Days or Have You Retired ? Thanks ! I just needed a little advice was all !

[@tedn4yx628]

A parasitic choke circuit might actually be the better design albeit a challenge in that cramped space. I also concur with cranking the power back a bit plus proper heat sinking as already shown. Great videos - thank you.

[@TRXLab]

Yeah cranking the power down will reduce the heat problem...73

[@robertcalkjr.8325]

Thanks Peter. I am surprised that you don't have the DCA 75 Pro.

[@TRXLab]

+Robert Calk Jr. Hi Robert, thank you! I had my tester already before the 75 Pro came out. But quite satisfied with mine.. 73

[@robertcalkjr.8325]

+TRXBench The DCA 75 is light years ahead of that one.

[@ianfletcher9456]

Hi there great vid...is there a reason why the plug pins top right is soldered across.keep up the good work you have really stirred my interest.

[@TRXLab]

+Ian Fletcher Hi Ian, no reason only by accident but this pins are anyway all connected together. If you watch my repair on the driver board in an earlier video you see how it is soldered together. Thanks for comment! 73

[@dennisqwertyuiop]

great work thank you

[@TRXLab]

+DENNIS N Thank you Dennis!

[@gregorywest2029]

Good job on the mod.

[@TRXLab]

+Gregory West Thanks Gregory!

[@k1mgy]

Is that resistor 1.50 Ohm 1% and connected to the gate? If so, I think this is called "bootstrap resistance". It reduces ringing caused by parasitic capacitance and inductance, which I think might be what is contributing to the runaway condition you mention which sends this circuit into self-destruction.

[@TRXLab]

+k1mgy Hi, yes it is a 1,5Ohm resistor. Don't know how it is called, but think we are talking about the same. 73's

[@jorgezuni2818]

How can I drive up the power to this radio on FM any mod’s ?

[@je1966]

Should I use a 1 ohm or 1.5 ohms resistor?

[@TRXLab]

no matter both is possible

[@je1966]

@@TRXLab thanks!

[@kashifakhtar4493]

very nice vedio sir i want to find answer from u i have a radio ic2720 icom is having problem continousely beeping can u give me ny clue.. i have all data service manual and all thing any answer is very from u is very good for me thanks

[@ChrisOrtizSirCable]

Another great job my friend !! KC3BGT

[@TRXLab]

+Chris „Sir Cable“ Ortiz Thank you very much Chris! All the best and 73

[@euro9115]

I realize this is a 7-year-old video, but thought I'd ask a question anyway. Did ICOM ever produce any of the IC-7000 radios with the redesigned driver boards? If so, does anybody know the start serial numbers of radios that were upgraded?

[@TRXLab]

yes ICOM implemented this mod, but I don't have the starting on mind

[@euro9115]

@@TRXLab Thanks for the reply. Would I be able to determine if my 7000 has the updated driver board without totally disassembling the radio?

[@gss15004372]

Thanks 100%100

[@TRXLab]

+hussain alonzi Thank you Hussain

[@shanemitchell5807]

The modification doesn't resolve the issue. There has been several iterations and addendum on the service manual and none have worked. The latest modification doesn't work as we have had several units burn. We had a case with one customer that had 3 units burn the driver within a very short period. Icom replaced his units under warranty and they still burnt the drivers. We visited his premises and found a few issues with his setup. I recommended some simple changes and now he has absolutely no issue anymore and his 7000's have not burn the drivers again. This was approximately 3 years ago.

[@TRXLab]

Hi Shane, what is the last working solution for this problem? Thanks for stopping by 73

[@shanemitchell5807]

Hi Tx Bench. The latest mod for the driver burn from Japan is 1. replace grounding fingers with one piece PCB grounding plate. 2. change gain resistor and cap on DSP board. 3 Readjust Tx gain in adjustment mode. This was in the form of a TSB from engineering Japan head office. This last modification still didn't work and this is typical of Icom Japan when it comes to complex problems. They have no clue.

[@grantfullen9559]

Great MOD :)

[@TRXLab]

+Grant Fullen Thanks Grant!

[@vladimirdudnichenko6067]

Thanks for video. Beter to make same modification on my icom-7000 to avoid burn it off. Thanks and 73! Vladimir UW5EJW/MM, ex UT5EKF/MM

[@TRXLab]

That is not wrong but be careful it is a bit tricky job!

[@petenikolic5244]

Far better remove the right hand pin from the connector then cu the trace just past that point new resistor will fit cleanly .

[@TRXLab]

good hint Pete. Thank you

[@petenikolic5244]

@@TRXLab I do the odd repairs now and then n othing like the amount you do as a hobby now so always looking at easy neat ways of solving things

[@DAVE_WHITE]

Always good information but he loves to hear himself talk, every video he does can be cut down to 1/10 of the the time. you are making us fall asleep dude..

[@TRXLab]

having a good sleep is a privilege