Haier 21f2a service mode keys

If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Circuit diagrams of SMPS section of many popular brand devices are given. Search the site by type in the "brand name" of your device, in the "Search box at the top right of the Homepage" to get gathered related posts.

Wonderful question - no wonder no one can help you.

Check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

It means your calculator is set to degrees mode. Angles can be measured using three different units: degrees (360 degrees in a circle), radians (2pi radians in a circle), or grads (400 grads in a circle).

Pressing the DRG key cycles through the three modes. No matter which mode you select, one of the annunciators will appear on the screen to indicate the current mode.

To reset the TV to its original factory settings, you have to enter its service mode. If you wish to get more, check this link. http://electronicshelponline.blogspot.com/ Pull up previous posts, either by entering the brand name to your device in the search box of the display window, or view it in Mosaic / Flipcard / Timeslide option.

At the top rignt are three icons, on right is red X and on left is (-) sign, ththe middle icon maxs the screen size.

Press SHIFT MENU to bring up the setup screen. Use the arrow keys to move to the "Angle" line and press the function key for the desired angle mode.

Press the SIN key, type in the angle, and press ENTER. Make sure you have the proper angular mode set (degree or radian). To check (and change) the angular mode, press the MODE key and bring up the mode screen.

Enter service mode (Function, Original Size "Ledger", 3) simultaneously. F1 will then show on display, press 7 then Start key, F7 mode will then be diplayed. 01 is the key operater id code and will show current id code. Touch 01, sreen will then let you make changes, select change and input your 4 digit code then select ok. Your finished, exit service mode.

We would be happy to help. We currently do not have anycodes specifically for your Haier TV. We would recommend performing apower scan. If there is a code that is compatible with your TV the power scanwill find it. Power scan instructions:

Step 1:
Press and hold the TV mode button until all mode button back lights illuminate,then release.

Step 2:
Press and release the Power button.

Step 3:
Press the Up button once per second while pointing the remote at the desiredequipment. If the code for the equipment comes up, the equipment will poweroff.

Step 4:
Press the pound (#) button. If the code entered is valid for the remote, themode light flashes three times.

After doing the power scan please remember to put the remote back into SAT mode.Thanks so much for being a valued DISH Network customer!


Phillip Chang
DISH Network Customer Service Representative