i replaced the hdmi port first with no luck then i noticed that it wouldn't do the two beeps for safe mode unless the televison wasn't connected to the console. Turns out that the ddc data bus has an issue. the clock signal is shorted to ground whenever the display is connected. Even if the console isn't plugged into the outlet. i'm not sure why the clock signal goes to ground. i removed the safety zener diode to rule that out as a culprit.
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Model: Lenovo Slim 7 14IAP7
Motherboard: NM-E412
Please, take a look at the enclosed photo and help me identify this IC. It is currently shorted, no boardview or schematics, I am unable to make out what this is.
The chip has markings "Y182" on line 1 and "2898" on line 2.
Thank you.... -
Hello:
I have both these laptops that appeared to have the same fault so I thought I would have a go at replacing the PCH as something to learn, they both are using the same PCH.
I started on the ACER:
Up on connecting power no signs of life but current is consumed from the bench power supply and the PCH is hot.
All the caps on the top of the PCH are showing 0 ohms and the 3.3v rail is shorted.
I followed the videos from Sorin, Electronics Repair School on Youtube heating from the bottom to install. I practised on around 10 scrap... -
Hi every one. I just want to share the successful repair of my shorted Panasonic TNPA4782AB SC board.
I don't usually do it but so many parts were shorted that I decided to buy the ShopJimmy repair kit instead of sourcing each components individually. Here is the list of components the kit contained, with a remark indicating if I needed that part or not :
D608, good
D618 RF101L4S, good (See warning 1 below)
D619 RF101L4S, good (See warning 1 below)
D865 RF101L4S, shorted (See warning 1 below)
IC464 Inverter HA MC74HC1G14, shorted...03-09-2020, 12:00 AM -
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