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Shimian QH270-Lite Teardown and Repair: Baking the PCB to Fix a Cold Solder Joint

This video will give you a look under the hood of the Shimian QH270-Lite. You will also see us bake the PCB to fix a cold solder joint.

We have seven or eight of these Shimian QH270-Lite monitors in the building. So far only one unit has arrived with any dead pixels (it had 3). This week we ordered a couple more and one had a cold solder joint. It would power on but never get a signal. The LG panel was solid and the ribbons were all in good shape... However, there was something fishy with the PCB. 

This video is really rough, so we do apologize about the audio and video quality. It was unplanned, but I thought everyone would enjoy watching us bake the PCB. Also, this video will give you a good look under the hood so you can see what goes into the Shimian QH270-Lite. 

In the end, we did fix the monitor! Let us know what you think. 

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posted 1 year 2 months ago

I've got to say I really enjoy the how to videos you guys do and I'd love to see more.

posted 1 year 2 months ago

I have been really eyeing up buying a shimian, i just have two questions is it hdcp compatible and what ebay seller do you suggest thanks i love the videos keep them comming!

posted 1 year 2 months ago

I like seeing how to videos like these.

I find it funny that you still don't see Wendel's face.

 

posted 1 year 2 months ago

Wendell has his own piece in one of the earlier vids...can't recall which one.   I guess you'll just have to watch them all!

posted 1 year 2 months ago

it's inbox 0002  Wendell talks about data on spinning platters

posted 1 year 2 months ago

HES REAL!?!?!?!

posted 1 year 2 months ago

I was so sure he was a midget version of C-3PO. Yet another dream of mined ruined by the interwebs.

posted 1 year 2 months ago

...and this is how I imagined Wendel by hearing his voice:

 https://lh3.ggpht.com/-Q7nkuS2g5kY/T_AZ6KgU1dI/AAAAAAAAA2I/9PMPozkTKkw/s...

 

posted 1 year 2 months ago

How do you know he doesn't look like a wookie?

posted 1 year 2 months ago

Great video. Thanks!

posted 1 year 2 months ago

Can you guys give me some tips on reflowing as I have to repair a laptops MB (Curse you HP). Any downsides using a regular oven over a smaller toaster oven besides the heating times?

Thanks.

posted 1 year 2 months ago

well, you want it to heat evenly. use a bar od steel or aluminum under it to help that

posted 1 year 2 months ago

The oven size only matters if the part you are reflowing doesn't fit, other than that as long as you can maintain a bit of an even monitored temperature then oven size isn't the problem. Hopefully you aren't going to cook food, in whatever oven you use, after the reflow. Using the aluminum plate in the toaster oven, like Wendell did, helped distribute the heat to the back of the circuit board was mainly/probably due to the heating elements directing heat to the top of the circuit board. Most reflow ovens use heated air and not heating elements inside the main cabin like conventional ovens. Even heating is preferred, but you can also reflow elements with a heatgun.  The biggest factor in reflowing success would be the reflow curves. Also know the components on your board, like Wendall also said, because if you over heat any one component and destroy it all that reflow work would be for not. 

posted 1 year 2 months ago

HOLY SHIT WENDELL! The man behind the voice....finally. Too bad I went blind then my head exploded from the shock of his screen presence.

posted 1 year 2 months ago

By great odins beard where is the fx-8350 vs i5-3570k video?

posted 1 year 2 months ago

I spy with my little eye...a Model M Keyboard!  I still have mine somewhere, that thing is awesome! 

posted 1 year 2 months ago

I thought that Wendel would look like an exact clone of Jamie Hyneman! Maybe he was in disguise.

posted 1 year 2 months ago

Sodder??  Haha... speak english.  Repeat after me... Soul-der.  Al-um-min-KNEE-um. lol :P

Cool video, never seen that done before.  Cheers.