Electronics > Repair

USB socket bad design?

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wraper:

--- Quote from: u666sa on November 24, 2024, 06:18:19 pm ---It is suppose to be soldered undearneath the connector. So soldering is not critical. But you can take it off and resolder properly if you wish.

--- End quote ---
It's supposed to be soldered everywhere. All terminals and under the shell. Front side shell terminals are the most important as it's the place with the most of force applied. Not soldering them makes it very weak.

amyk:
Of course the USB connector should be fully soldered to the board, but on the other hand if it is, there may be more stress on the PCB too.

Connectors used to be mounted to the chassis and attached via a short cable to the board, but in pursuit of cost-saving and planned obsolescence they got rid of that.

wraper:

--- Quote from: amyk on November 24, 2024, 11:20:51 pm ---Of course the USB connector should be fully soldered to the board, but on the other hand if it is, there may be more stress on the PCB too.

Connectors used to be mounted to the chassis and attached via a short cable to the board, but in pursuit of cost-saving and planned obsolescence they got rid of that.

--- End quote ---
Connectors on a separate board was a more recent trend, and mostly to reduce main PCB size. Nearly all Nokia phones (when it was actual Nokia) had micro USB soldered to main PCB. Most of them has connectors with no TH terminals, and they were torn off PCB (usually together with SMT pads) if you look on them funny. A few models which used connectors with TH shell terminals were rock solid and USB barely ever was an issue.

u666sa:

--- Quote from: wraper on November 24, 2024, 08:25:50 pm ---It's supposed to be soldered everywhere. All terminals and under the shell. Front side shell terminals are the most important as it's the place with the most of force applied. Not soldering them makes it very weak.

--- End quote ---
Circa 2013 - 2016 there was bunch of cheap phones with micro usb. Yea, they'd bring them to you, you replace connector and it absolutely does not matter how you solder the damn thing. Some designs would come back to you. Hot glue trick helps a lot. Think of it as holding connector down in place while they go ahead and insert the cable in, drop the phone, wiggle the cable side to side, to make sure it is inserted properly.

Sometimes they'd bring the phone with detached connector and piece of motherboard still soldered to that connector.

wraper:

--- Quote from: u666sa on November 25, 2024, 03:53:50 am ---
--- Quote from: wraper on November 24, 2024, 08:25:50 pm ---It's supposed to be soldered everywhere. All terminals and under the shell. Front side shell terminals are the most important as it's the place with the most of force applied. Not soldering them makes it very weak.

--- End quote ---
Circa 2013 - 2016 there was bunch of cheap phones with micro usb. Yea, they'd bring them to you, you replace connector and it absolutely does not matter how you solder the damn thing. Some designs would come back to you.

--- End quote ---
Because they did not have TH terminals. You cannot solder TH terminals if there are none. Having TH terminals and not soldering them is even dumber than using connectors without them.

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