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Re: akai LCT2721AD - Power on - Sound on - Black screen...
Ive reviewed and assisted anoter person who had a similar problem that caused the tv to malfunctioin simialr to yours. After doing some short research and the other person who had the problem, came to find out that 4 resistors failed on the main board causing this to happen. It also could be the backlight of your Plasma screen tv, or your Plasma screen itself is shot.
I would recomened that if you have no active warenty to give a visual inspection of the Tv, via removing the rear black plastic pannel to see if any of the corisponding chips have any burn marks or excessive heat stress. these items seem to be failing about the 12 month mark
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Whn you try to power it up does it attempt to power on before going red or does it just stay red? If it just stays red then its definitely a case of faulty power supply board. The easies way to resolve this problem would be to replace the power supply board, which can be obtained for about 50-75$ from shopjimmy.com. So let me know if you wish to fix it yourself
I had the same problem with mine. I took the back off of it and found 3 blown 1000uF capacitators in the power supply. I replaced them and now it works fine. Cost me about $1 compared to $100 at the shop.
You only have to unplug it for 30 seconds. Also, make sure it does not have a DVD in it when you turn it off as the TV will try to default to the DVD all the time. Resetting the power (I use a surge protector) allows it to turn back on normally. Based on the comments I've seen this TV has terrible sound with DVD, doesn't want to turn on, and is hard to mount on a wall.
We need to verify if the problem is in the preamp or poweramp sections. Hook up the powered PC speakers to the AUDIO Line out RCA jacks and verify that sound is OK there, if it is OK, The problem will be in the power amp sections that drive the speakers. If it sounds bad at the RCA jacks, the problem will be in the sound processor board which mean the main board will have to be replaced, same if the power amp is bad.
I have a vizio 42 " LCD TV, model #VX42L, I was watching tv last nite all
of a sudden there was not sound or picture, I could not turn the tv off, but I could turn the dvr off. Still no picture or sound.
Based on what I have read AKAI has reoccurring problems with power supply and bad DVD sound. The problem you have is caused by the DVD player trying to start. Never leave a disk in when you shut it off or you will have the same symptom you are describing.
It is nothing just hold your on button untill it turns off again hold it again but nou it will make a sound keep holding your finger untill it makes the sound twys in a rowe take your finger of and in about 5 sec a screen will apear say restore sestem if it's not working the first time do it again untill it work's 100%.HOPE I WAS USEFULL PLZZZZ RATE ME O JHE SORRY FOR ME SPELLING I AM ONLY 13 AND AFRIKAANS if u want some more answer about ps3,2 or 1 or any network or PC problems email me to email@example.com i even do DVD player so lpzzz rate me and if there is anything els plzzzz email me i will help. :-)
I would bet on the power supply....these (and other Akai LCD) are notorious for filter capacitors. Look for electrolytic capacitors with a dome-like bulge on the top of them. They are usually located at the top of the power supply board where the power output lines run out.