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Highboost73 · 08-30-2010, 08:09 PM

Hey guys, I have a Turnigy 9.9v LiFe that is reading 0.0v at the connector. I pulled it apart and I don't see any issues with soldering. I checked and each cell is at 3.33 or 3.34. I can' t find where I am losing connectivity. Any help on where or what to look for?

JohnRobHolmes · 08-30-2010, 08:16 PM

Sounds like a bad joint on the connector. Fake deans on there, or bullet plugs?

Highboost73 · 08-30-2010, 08:53 PM

Connector is good. I unwrapped the pack, and have checked voltage at each cell, and at the solders where it comes out. I am getting voltage at the solder joints for each one. I am just unsure of exactly how this cuircut is built. I am not getting the same readings at the ballance plug as I am at the solder joint it's self. and help?

JohnRobHolmes · 08-30-2010, 08:55 PM

So if you test where the main discharge wires are soldered to the pack, do you get 9.9v there? Could be a broken trace on the PCB. Did you short the pack by chance? That will "break" them.

Highboost73 · 08-30-2010, 09:18 PM

Checked at the main discharge leads and nothing. I did short it. Is that not fixable? I have shorted across many auto batteries in my years as a auto tech, and not broke them. If it's shot, oh well, but i would sure like to make it work.

JohnRobHolmes · 08-31-2010, 05:29 AM

Inspect the PCB that connects the cells carefully, maybe post up a pic. I bet you broke a trace on the pcb.

Highboost73 · 08-31-2010, 03:08 PM

Thanks, I will look it over real well and get a pic up when the wife gets home with our camera. Any tips on what exactly I am looking for on the PCB?

JohnRobHolmes · 08-31-2010, 04:46 PM

Looks for a little burned spot.

08-30-2010, 08:09 PM	#1
Highboost73 Newbie Join Date: May 2010 Location: Mesa Posts: 39	3 cell 9.9v LiFe issue Hey guys, I have a Turnigy 9.9v LiFe that is reading 0.0v at the connector. I pulled it apart and I don't see any issues with soldering. I checked and each cell is at 3.33 or 3.34. I can' t find where I am losing connectivity. Any help on where or what to look for?

08-30-2010, 08:16 PM	#2
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	Sounds like a bad joint on the connector. Fake deans on there, or bullet plugs?

08-30-2010, 08:53 PM	#3
Highboost73 Newbie Join Date: May 2010 Location: Mesa Posts: 39	Connector is good. I unwrapped the pack, and have checked voltage at each cell, and at the solders where it comes out. I am getting voltage at the solder joints for each one. I am just unsure of exactly how this cuircut is built. I am not getting the same readings at the ballance plug as I am at the solder joint it's self. and help?

08-30-2010, 08:55 PM	#4
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	So if you test where the main discharge wires are soldered to the pack, do you get 9.9v there? Could be a broken trace on the PCB. Did you short the pack by chance? That will "break" them.

08-30-2010, 09:18 PM	#5
Highboost73 Newbie Join Date: May 2010 Location: Mesa Posts: 39	Checked at the main discharge leads and nothing. I did short it. Is that not fixable? I have shorted across many auto batteries in my years as a auto tech, and not broke them. If it's shot, oh well, but i would sure like to make it work.

08-31-2010, 05:29 AM	#6
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	Inspect the PCB that connects the cells carefully, maybe post up a pic. I bet you broke a trace on the pcb.

08-31-2010, 03:08 PM	#7
Highboost73 Newbie Join Date: May 2010 Location: Mesa Posts: 39	Thanks, I will look it over real well and get a pic up when the wife gets home with our camera. Any tips on what exactly I am looking for on the PCB?

08-31-2010, 04:46 PM	#8
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	Looks for a little burned spot.

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