Classroom TV

The Classroom TV is hooked up to various PCs.

Once we repair'd it by exhaustively testing each LED on the device and replacing the broken one.

The TV

The current TV is a 60-inch Sharp Aquos LC-60LE920UN.

Manual is available at http://files.sharpusa.com/Downloads/ForHome/HomeEntertainment/LCDTVs/Manuals/tel_man_LC52_60LE920UN.pdf

https://www.youtube.com/watch?v=rhSiDx5P9s4

It should be labeled appropriately for ease of use. There is a remote control. If the screen won't come on and the little LED logo at the bottom middle blinks instead of coming on solid, reset according to instructions on the device.

Sometimes when there's a problem, it displays a constant small blue box which reads [K] 60LE810UN which the careful reader will note looks remarkably like a model number...

Resetting the TV

http://www.fixya.com/support/t17617780-60_sharp_aquos_power_indicator_flashing

POWER LIGHT FLASHES ONE SHORT AND ONE LONG FLASH.

What is the problem? THE PROBLEM IS THAT ONE OF THE LED's STRIPS IS BAD!

SHARP AQUOS LC60LE810UN RESET INSTRUCTIONS

   1. Plug in TV to electric current First then wait until LED start flashing.
   2. Press Volume DOWN [ - ] HOLD BUTTON.
   3. Press Channel UP [ ^ ] HOLD BUTTON.
   4. Press Power [ (') ] HOLD ALL three buttons until LED stops flashing and then release.

This will reset the TV in order to fix the problem.

THE FIX IS TO REPLACE ONE OF THE LED's. You need to open the back of the TV and you will also need to remove the front cover and panel to get to the LEDs. The TV will need to be placed facedown and on the backside. This is a 2 person job to turn the TV on its sides. Be careful with the white computer connectors (wide white strip) at the base of the TV where the TV stand sits. You will need to disconnect this in order to get to the LED's.

Once you have the LED's exposed, you will need to unplug one by one by placing the new strip next to it until the unit turns on. You will have to use the RESET procedure above if the Power lite flashes. The Power lite MUST BE ON SOLID - no blinking in order to test the strips. The LED's will flash, but still one of them will be burned. Even if you stare and all the strip light-up, you will still need to check one-by-one!

Once the TV lights up, your face will also light up with joy! Put everything back together and you are set. If you need the complete instructions which come from Sharp as to how to disassemble the unit, please send me an e-mail to [email protected]. Please note I don't check this address daily, so a few days wait may take for you to receive the instructions.

Where can you buy the LED's - try searching Yahoo.com or Google.com for resellers.

SHARP AQUOS LC60LE810UN LCD STRIP INFORMATION

   LONG STRIP (49 LED's)
   FRONT SIDE BACK SIDE RL 94v-0
   E329419
   1029
   LFa
   Sn-Ag-Cu
   Ps-1
   K4458TP
   4458ZZ
   0921FM
   104863
   ee03A

   SHORT STRIP (30 LED's)
   FRONT SIDE BACK SIDE
   RL 94v-0
   E329419
   1025 LFa
   Sn-Ag-Cu
   Ps-1
   K4459TP
   4459ZZ
   0714FM
   302213
   Mm05A 

Posted on Dec 11, 2013

SOURCE:

No POWER

How many times does the POWER led flash per second? (Dont worry about the OPC).

   * 1x (steady constant blink) = Lamps or inverters
   * 2x = Power Supply
   * 3x = Main Unit

If i am reading it correctly, looks like the POWER led is flashing 2x, which means it is a power supply failure. Either way, your TV needs to have a board replaced, there isn't anything you can do to fix it yourself. Try locating your local sharp authorized service center to repair your TV (1-800-237-4277)

Posted on Mar 16, 2008

The PCs

Windows VR box

(it's grody and uses proprietary poison).

Classroom TV

(highly superior build -- uses Debian Linux, a free software distribution, although we have compromised to allow non-free software and firmware).

2018-02-27 21:29 <thossou> something's up with the GPU on the classroom tv what for it won't work
2018-02-27 21:30 <thossou> but the fans turn
2018-02-27 21:30 <thossou> http://dlcdnet.asus.com/pub/ASUS/mb/LGA1366/Sabertooth_X58/e5995_sabertooth_X58.pdf#p55

Instructions for use

How to remotely control the classroom-tv PC

(copy from the desktop of classroom PC)