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Author Topic: Having to reset clock on Icom 7300  (Read 389 times)

KC8KTN

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Having to reset clock on Icom 7300
« on: November 10, 2021, 12:37:59 AM »

I am having to reset clock all the time. I seen on u tube there is a clock battery. Has anyone changed battery. My icom 7300 3.5 years old. Thanks for any advice
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G8FXC

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Re: Having to reset clock on Icom 7300
« Reply #1 on: November 10, 2021, 02:27:33 AM »

It's a common problem - the battery capacity is very low and there is no circuitry to protect against over-discharge which can occur in as little as two or three weeks if the radio is not used and which will quickly damage the battery. I have considered replacing the battery in mine, but it is a fiddly job. It's a surface mount device, physically small and not very accessible. I'm experienced at SMD construction and repair and have the proper equipment, but I'm nervous about doing damage to the main board.

If you do decide to replace it, it is a Seiko device. There is an alternative in the range which should be more suitable - it's designed to be more resilient to over-discharge. Alternatively, if you have your 7300 hooked up to a PC, there are a number of programs available that will set the clock for you. I control my 7300 via Win4ICOM and that has a function which will set the radio clock to the PC clock every time it is fired up. This is what I've chosen - too much risk involved in replacing it...

Martin (G8FXC)
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K7JQ

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Re: Having to reset clock on Icom 7300
« Reply #2 on: November 10, 2021, 05:12:14 AM »

One of my 7300's clock died. I never looked at it anyway. Plenty of other time notifiers in my shack.

That being said, if you want a time stamp on the SD card for firmware updates or saved settings, the clock has to be working. If I perform one of these tasks, I'll just reset the clock at that time.
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KE4BCN

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Re: Having to reset clock on Icom 7300
« Reply #3 on: November 10, 2021, 06:19:55 AM »

Mine is bad also but the rig interface software I use sets the time for me.
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KC8KTN

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Re: Having to reset clock on Icom 7300
« Reply #4 on: November 10, 2021, 08:07:00 AM »

Thanks for the great advice.
I will use one of the control programs.
Everyone stay safe.
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WA9AFM

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Re: Having to reset clock on Icom 7300
« Reply #5 on: November 10, 2021, 08:15:04 AM »

'it is a fiddly job'?  I speak fluent Canadian, but have haven't heard that term.
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K0UA

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Re: Having to reset clock on Icom 7300
« Reply #6 on: November 10, 2021, 10:23:28 AM »

The key to keeping the 7300's clock working is to keep having power applied to the rig at least every few days. The rig does NOT have to be "turned on" it just has to have power on it. My first one is about 5 years old and works fine, but it is powered up nearly every day even if not turned on. My 2nd 7300 is really only powered up during the 6 meter Es season, because that is about all I use if for, but it is powered up every day as it is on the same power supply as my 7610. It is working fine also but it is only about 3 or 4 years old.  Yes the battery changeout is like changing any SMD part in the 7300. Easily doable (by me), but many would not want to take on that task. If and when I take on that task, I will be doing an upgrade with an external holder to put in a CR3032 or something similar.  But for those whose battery still works, Make sure it is plugged in to power even if you don't power it up fully.
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73  James K0UA

G8FXC

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Re: Having to reset clock on Icom 7300
« Reply #7 on: November 10, 2021, 12:19:27 PM »

'it is a fiddly job'?  I speak fluent Canadian, but have haven't heard that term.

It may well not be a commonly used term in Canadian... I speak fluent English - and have done for the last 65 years - and "fiddly" is a common term here - https://dictionary.cambridge.org/dictionary/english/fiddly ...

Martin (G8FXC)
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K0UA

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Re: Having to reset clock on Icom 7300
« Reply #8 on: November 10, 2021, 12:59:55 PM »

fiddly
adjective UK informal

 
difficult to do because the parts involved are small:\

Repairing a watch is a very fiddly job.

I hate painting the fiddly bits in the corner.

looks like fiddly describes it pretty well to me.
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73  James K0UA

KC8KTN

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Re: Having to reset clock on Icom 7300
« Reply #9 on: November 10, 2021, 05:22:54 PM »

I like the term my Wife uses the thingy. Fix the thingy my bob.  Thanks again everyone.
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G4AON

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Re: Having to reset clock on Icom 7300
« Reply #10 on: November 13, 2021, 09:05:51 AM »

For anyone who also has an IC9700, that is even more “fiddly” to replace. The tiny SMD clock battery is mounted under a soldered down screening plate! The one in the 7300 is more accessible in the corner of the main board.

What on earth were the Japanese designers thinking when they decided to use such batteries? Fortunately not all manufacturers are that bad…

73 Dave
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