Subject:
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Re: Short Circute Problem -- EMERGENCY
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 1 Feb 2001 12:46:29 GMT
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Viewed:
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953 times
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In lugnet.robotics.handyboard, Raju Kammela writes:
> Hi Guys,
> I got a serious problem with my HB. Bymistake my 12 volts 1 amp power
> cord touched to HB(which is on at that time) circut track near the HB's direct
> charge connector. then there is short circuit crisp sound from that are and HB
> stoped working. I switched off the HB and switched it on again. LCD is showing
> black boxes on the first line. Then i tried reloading the pcode. it is going
> into boostrap mode and load was sucess. when i resetted the board it not
> working again. i loaded pcode number of times still no use HB is not working.
> every time i switch on HB one of the motor outputs or going high.
> i thought only LCD is gone. but it is not, board is not responding
> to IC except in bootstrap mode. so my question to you is where should i start
> checking in the HB to find out which component is blown. do i need to change
> the processor. please advise me......... any help in this matter is
> appreciated.
>
> Thanks for your time,
> Raj
Hi Raj,
first you should have a look at the assembly manual
http://handyboard.com/hardware/assembly.html
There are testing description for every step of assembling.
So you'll possibly find the proplem on your own.
If not you will have to describe the spot you touched your HB more precise .
Did you mean charge connector on the little board from page11 from the manual ?
Then perhaps your bridge rectifier (AC-DC Converter ?) is gone with the wind,
or the 5 Volts DC regulator or ...
Look at their testing hints !
Rainer
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Message has 1 Reply:
 | | Re: Short Circute Problem -- EMERGENCY
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| Hi Rainer, thanks for your advise on this. i will fallow the test cycles mentioned in HB manual. What i noticed is , charging circuit(changeing/interface board) working and HB is working in bootstrap mode also. it is able to sync with IC in (...) (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Short Circute Problem -- EMERGENCY
|
| Hi Guys, I got a serious problem with my HB. Bymistake my 12 volts 1 amp power cord touched to HB(which is on at that time) circut track near the HB's direct charge connector. then there is short circuit crisp sound from that are and HB stoped (...) (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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