Allegro abr521 manual

https://www.manualslib.com/download/1330793/Allegro-Industries-Abr521.html

Try the following link:
http://136.166.4.200/contents/STB/ABV441/ABV441_Owners_Manual.pdf

There is not really a true 'universal remote.' If the remote is of older design than the set you wish to control, it will not contain the code set you need.
Before you buy another, check the mfr's website for code sets for any given model remote to ensure you aren't buying another one which will end up in a drawer. Unfortunately, this is a very common problem.

Check your video connection (assumi8ng you nhave the LELLOW / RED & WHITE cables) or if using a RF (cable) connection be sure you are on the right channel (3 or 4). Worth a shot. Beyond that, you have other issues.

The remote control might need to be repaired. They repair them at http://www.replacementremotes.com/ and they sell self repair kits at www.keypadrepair.com
There are other sites but I use those because the company I used to work for relied on them as a reputable company and I don't know about the others.

You can try a remote reset by turning off and unplugging the Allegro. Leaving it unplugged take the batteries out of its remote. Point the remote at the Allegro as if you were going to power it on. Hold down the power button for two minutes. Then press and release each button on the remote control twice. Next plug the Allegro back in and power it on from the on off button located directly on it. Then put the batteries back in the remote control and try it.

http://www.universal-remote.net/philipsmagnavox.html

go to this link and you will see your codes

I have the instruction sheet for this remote. I scanned and posted it on my site

http://roburt.com/ATT-200B.html

good luck! Robert

input output plugs were not in the right slots

Sharp 026 • 091 • 129 • 141

the guide can be retrieved from
http://www.comcast.com/MediaLibrary/1/2/CM/VanityURL/documents/us_electronics_uf4200c_manual.pdf

On the remote control, press and hold the appropriate mode key (TV button) until the four mode
keys flash twice. The mode key will continue to flash.
Enter the three-digit code. See above I gave all the Sharp codes.
After you press the first digit, the mode key should light and stay on. After you press
the last digit, the mode key should flash three times and turn off.
If the mode key does not flash three times before turning off, the code is invalid for
this device type. Repeat the procedure with another device code.
Point the remote at the device and press POWER. If the device turns on or off, you
have finished programming.
If you have tried all the codes listed for the manufacturer and the device does not
respond, refer to the CodeScan™ section later in this manual.

Remove the casing of the unit. You will see a head where the tape runs across. Keeping it powered up, with tape in....There are three screws around the base of the head. With a small phillips adjust the head by turning the screws one by one. If you adjust out too far, the screws will come out completely. Take your time when adjusting. You will notice the picture change with the turning of the screws. The sound will change also. It takes very little adjusting to get it right. Play around with it and it will work in no time...Good Luck