Author Topic: Lifted pad for battery circuit  (Read 1178 times)

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Offline Mp3Topic starter

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Lifted pad for battery circuit
« on: September 02, 2018, 04:09:36 am »
Hey everyone,

I got an older device here I am repairing. The previous owner tried to replace the solder type battery and seem to have lifted the pad to the negative side of the battery terminal. It uses a 3.7v lithium battery for the SRAM. The SRAM contents aren't saved when power cycling, so i went to check the battery voltage and it was reading 3.5, so that is no problem. I then inspected on the other side of the PCB and found the lifted pad.

The track from the negative side of the battery seems to lead to one side of a 2N4401 transistor "Q7"

Do you guys think I could tie a wire between the  battery leg and transistor leg? I know to be very careful with heat on the battery leg.

Normally i would try without asking but since a battery is involved, i don't want to cause a problem.

Thanks everyone :)

High school graduate
 

Offline 6PTsocket

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Re: Lifted pad for battery circuit
« Reply #1 on: September 02, 2018, 02:16:35 pm »
Yes. I have bypassed lifted pads and lands with a short piece of wire or glued the land back down with epoxy or a good cyanoacrylate (industrial crazy glue). Just use flux and work quick.

Sent from my SM-G900V using Tapatalk

 
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Offline Terry01

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Re: Lifted pad for battery circuit
« Reply #2 on: September 02, 2018, 02:24:19 pm »
Yes. I have bypassed lifted pads and lands with a short piece of wire or glued the land back down with epoxy or a good cyanoacrylate (industrial crazy glue). Just use flux and work quick.

Sent from my SM-G900V using Tapatalk

LOL I like that!  ;D
Sparks and Smoke means i'm nearly there!
 

Offline Mp3Topic starter

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Re: Lifted pad for battery circuit
« Reply #3 on: September 03, 2018, 10:33:33 pm »
Cool, thanks guys, i was mostly worried a wire between the battery and transistor might cause something unwanted to happen. I'll go ahead and make that connection 8)
High school graduate
 

Offline Terry01

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Re: Lifted pad for battery circuit
« Reply #4 on: September 04, 2018, 07:26:42 am »
A nice pic of the finished results would be cool??  :)
Sparks and Smoke means i'm nearly there!
 


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