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 18:33:25 GMT
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Viewed:
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974 times
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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 bootstrap
mode
and then i was able to download the Pcode. when i reset the board it is not
starting
working so. do you think it is the problem with processor? let me know if you
have
any hint about this. i will give you more details once i go through the
testing cycle in
HB manual.
thank you very much for your help. i appreciate it.
Raj
In lugnet.robotics.handyboard, Rainer Balzerowski writes:
> 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 guys , i tried all the tests mentioned in the HB assembly to find out which part of the HB blown. No luck. i am giving the results here: 1) Tested the interface and charger board - looks good. (Both power supply and the MAX232 circuit) 2) Tested (...) (24 years ago, 2-Feb-01, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Re: Short Circute Problem -- EMERGENCY
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| (...) Hi Raj, first you should have a look at the assembly manual (URL) 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 (...) (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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