Electronic Repair

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6 years 7 months ago #13720 by 4Pedalsfly
Electronic Repair was created by 4Pedalsfly
My HobbyKing X200 Touch Screen Charger has been giving good service for the last 2 years, having
balance charged one LiPo , I started to balance charge another when the screen went blank .
Three pics are attached, one showing where the failure occurred, I'm uncertain if it's a failed component
or just a soldered joint.
It would be much appreciated if someone with electronic knowledge could perhaps see if it is repairable.
Many Thanks
Colin.
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6 years 7 months ago #13721 by kevinross
Replied by kevinross on topic Electronic Repair
Looks like a failed SMT device (surface mount technology) for which I don't have in depth knowledge but know specialist tooling & skills required.

Suggest showing damage to Mitch for his advise.
The following user(s) said Thank You: 4Pedalsfly

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6 years 7 months ago #13722 by Brian
Replied by Brian on topic Electronic Repair
Hi Colin, try cleaning the area with a cotton bud and alcohol first. There's a bit of print showing through the hazy deposit, it looks like "GND" I think it might be that a soldered joint has failed. The damage looks as though it's been caused by heat, as its appears to be the "GND" connection, that would mean that all the current goes through that single point and it could easily overheat if the connection wasn't good.

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6 years 7 months ago #13723 by 4Pedalsfly
Replied by 4Pedalsfly on topic Electronic Repair

Brian wrote: Hi Colin, try cleaning the area with a cotton bud and alcohol first. There's a bit of print showing through the hazy deposit, it looks like "GND" I think it might be that a soldered joint has failed. The damage looks as though it's been caused by heat, as its appears to be the "GND" connection, that would mean that all the current goes through that single point and it could easily overheat if the connection wasn't good.


Brian - Thanks - It is "GND" and the connector pin has 2 pins also marked "GND" and it would appear these are connected to the burnt "GND"
Having cleaned the burnt bit should I then apply a hot soldering iron & hope for the best ?
Colin.

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6 years 7 months ago #13724 by John Bannister
Replied by John Bannister on topic Electronic Repair
Hi Colin have you tried pressing and tapping the LCD and pressing on the joints with power on. If you think all is lost try unplugging LCD and then reconnecting
Are you getting power to the board.

Best of luck
John

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6 years 7 months ago #13725 by Brian
Replied by Brian on topic Electronic Repair
Hi Colin, once the burnt area is clean, re-solder the joint. If you have some resin cored solder it would help get a good joint. A clean joint and a clean iron will ensure a good repair. Don't leave the iron in contact too long though. Good luck.

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