Could someone me identify a burned-up resistor

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SUMMARY

The discussion centers on identifying a burned-up resistor from a mainboard of an origami stroller, which operates on an 11.1V lithium battery. The resistor, suspected to be originally a 10 KΩ, has been measured at 12.68 KΩ, indicating it may have increased in value due to overheating. Participants suggest that the resistor's gold band indicates a 5% tolerance, and they emphasize the importance of understanding the circuit layout and checking other components, such as transistors and capacitors, to diagnose the issue effectively.

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  • #31
yes Dadface there is nothing that i or another member could find shame it would have made it abit more simple.
 
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  • #32
carlos468 said:
I cannot seem to find where i could buy one from ..
If you have or could make an account at http://www.ebay.com/, you can get 10 for US $1.70 from http://www.ebay.com/itm/10pc-SMD-Voltage-Regulator-IC-78D05-5V-0-5A-TO-252-UTC-/131872655850?hash=item1eb43909ea:m:mewwUp7l5Q3g0cQ2z133Efw.
 
  • #33
carlos468 said:
thankyou jim i afraid it shows nothing at all no voltage

No voltage at output pin? What about input pin?

Here's its datasheet.

http://www.unisonic.com.tw/datasheet/78DXX.pdf

Looks to me like an industry standard part. TI or ONSEMI or anybody's 7805 should work,
usually i suggest getting the same package, dimensions are industry standard too,
but for your repair one of the TO251 's would work if you can bend the leads to make it physically fit so you can solder it in.

You could get one at Radio Shack just to try out. You might find one in a discarded VCR or wireless router, they're a very common IC.

good luck

old jim
 
  • #34
Just an update after week of trying I have given up I replaced most parts and managed to get 11.3 volts on the output pins the battery was 11.1v so I thought I was on to a winner but alas no nothing worked I connected my desktop power supply to the knob on the handle bars and managed to get it to light up with 15v I'm not sure what's up but I have put back together before I forgot how it all went still had fun with some soldering and trying to work out how it all worked I failed but it was worth it
Anyway just wanted to thank everyone who commented and tried to help me
 
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