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HelicopterRadio - Servo - Gyro - Gov - Batt › JR-8103 DT radio Lithium Battery
09-02-2003 01:19 AM  14 years agoPost 1
RCL

rrApprentice

Scottsdale, Arizona

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i am going to replace the Lithium battery in my JR 8103 DT (3+ years old). I took the case apart (BTW, no deteriation) and cannot find the battery. Any body know where it is (front or back portion of case)?

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09-02-2003 04:21 AM  14 years agoPost 2
rcpylon

rrApprentice

Saltillo, MS

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Its on the front(back as viewed) side of the lower circuit board. you will need to get the battery from horizon as it has tabs spot welded on that connect to the board. also take note of the opposite side and take note of the solder pattern. there should be two places bridged by solder. trust me in the fact that if you don't re-bridge the connection, your radio won't work. I'd offer to take a picture but taking a case apart isn't much fun as you will soon find out.

the trick I found in putting the buttons back in place is to put them on the board switches and then put the case over them while they stand upright. then oll you will need to do is rotate the chrome part of the button to slide into the button slot on the front of the case. once you have all of them seated, then carefully flip the assembly over and put in the screws. take careful note of how all the wiring is run also. there are a few that run around the gimbals in a certain way. I'd recommend taking some pics as you dissamble the case. they will help you in the reassembly phase.

-------------------------
Alan Warfield
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09-02-2003 04:32 AM  14 years agoPost 3
RCL

rrApprentice

Scottsdale, Arizona

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Alan - thanks for the detail explaination. The $10 question: is it worth sending the radio back to Horizon or trying the replacement myself? Thanks again. Richard

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09-02-2003 01:40 PM  14 years agoPost 4
rcpylon

rrApprentice

Saltillo, MS

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If you're mechanically inclined and feel confident with your soldering abilities, go for it. if not, just send it in.

-------------------------
Alan Warfield
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09-02-2003 08:06 PM  14 years agoPost 5
9387ASH

rrElite Veteran

UK

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IF you are going to do it yourself, beware !!

You will need to do it fairly quickly otherwise you will lose the calibration.
The board will retain power for a short period of time and after that you would need to get the sticks recalibrated and set the A/D converter.

If you are careful, keep the main battery connected as you do the Lithium change, that way the board retains power and the memory chip is "kept alive ".

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HelicopterRadio - Servo - Gyro - Gov - Batt › JR-8103 DT radio Lithium Battery
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