My freezer stays at 29 and won't freeze

It was the fan at the top of the freezer that had stopped working after 3 years, therefore the freezing air wasn't getting to the top of the freezer. From the inside, unscrew light unit and unclip, pop out two circular discs at top and unscrew one screw. Unscrew 2 more screws and prise the back panel off. (Arrows mark the clips). Pull off fan, take out motor, replace (keeping rubber bits) and push back fan with a bit of nail varnish on spindle. Put everything back together. Turn on, depress door light switch and after 30 seconds fan should rotate. You can buy a fan on eBay or from www.4daewoo.co.uk for about 40 pounds.

When you thawed it, did you remove ice from it using a metal object. That may have damaged the coils when would allow freon to leak out. This is too coincidental to be a problem itself with the compressor. The t'stat might be the problem. Try turning it off at the t'stat for a few minutes, then turn back on to the normal setting. Keep door closed for 30 minutes and check the inside and see if the walls are freezing. If not, you may have a compressor problem, or t'stat, or relay switch problem.

Sounds like your control switch is going bad. Good thing you have the quick freeze button. You may want to go ahead and replace it. The whole thing will go out soon. This is something you can replace yourself.

When you say "cleaned", did you defrost it? And. if so, could you have damaged the internal lining? Often the coil inside the wall of a chest freezer can fracture if hit or stabbed at during defrosting.
Other than that, is the compressor running (you would hear it)? it may have overheated. If not running, see if it feels hot (siezed) or cold (no power from thermostat). If cold, put it on fast freeze and see if it kicks into life (thermostat faulty) or not (compressor fault, time for a new freezer!)
Let me know how you get on!

try a new termostate if not working u need to refill the compressor with new gas

Well a freezer is easy to repair. The circuit goes from one side of the power cord to the cold control and down to the compressor then out to the other side of the power cord. Id the control or compressor relay is open then she won't freeze. All the parts to it are listed HERE.
From the list I see an overload for the compressor. If that one is open it won't freeze. Bypass the temp control wires to see if she runs.

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my freezer defrosted it self and the red tryangle light stays on what is it

THE RED WARNING LIGHT KEEPS COMING ON AND I HAVE TO KEEP PRESSING THE FAST FREEZE BUTTON, THIS IS EVERY FEW DAYS. IF I DONT NOTICE ALL THE FOOD DEFROSTS!

Try changing the defrost timer. 1-800-673-1262

have you checked the door seals, if it has split it won`t freeze 100% as warm air will get in and keep the temperature up, bit like leaving the door slowly open hth