Hello all... TV started boot looping. Opened the back panel and tried to isolate the problem. Just PSB no boot loop. PSB and MB no boot loop. Plug in the LVDS from panel to MB and boot looping starts up. It doesnt matter of order that I plug the LVDS ribbons back in, only 1 and no boot loop but as soon as 2nd one plugs in boot looping. I then noticed a flicker on the screen when I was closing the clip on the harness to the LVDS. Shut the lights off so I can see better, and I noticed as i slowly close it, I will get a picture, but as soon as it clips in, I lose picture and booting happens. So I...

Problem

This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....

12v pin is shorted to ground in the LCD board (1st picture) if the LVDS cable is disconnected, 12v are OK in the Main Board (2nd Picture)

Hi. Recently serviced a damaged A1466 Macbook Air. Thought to post the issues and resolution for each.

Macbook AIR Model A1466 Diagnostic 09-01-2021

Issue: Liquid damaged (beer spill) Macbook AIR will not power up.


Problems & Resolutions

1) Attached Apple magsafe power adapter. No green / no orange light. This confirms the absence of the PP3V42_G3H voltage rail. The PP3V42_G3H rail is the primary voltage rail necessary to communicate with the magsafe power adapter to report the green or orange light status to the end user....

I have a broken connector (believe it's a 6 pin mini-DIN) on a cable. The metal shroud and all but one of the pins are separated from the cable, and just stuck together for the photo. The other end is an unknown rectangular connector. The cable is for the foot pedals on an Italian made electronic piano, and the company is out of business. Looking for ideas on how to fix it. I have a soldering iron, but I'm not very skilled at soldering, so getting a retrofit for the broken end may be beyond my ability. The other end would be easier to replace, if I could get a mini-DIN cable with the same number...