I have a 22" multi system lcd wide tv & dvd combo. This tv just goes out for a month at a time. Them one day the light is on on the power supply and it will come on. Do you think that if I replace the power supply it will work?
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Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Check and replace it main system control memory IC & all micro-switches at its front panel control board. Contact any service technician. Gopakumar Gopalan Google
Your problem either lies with the power supply or main board. I suggest you start with the power supply. Make sure you have standby (5vdc) power with the set plugged in. I would also check for any bulged power supply caps. I would also suggest you verify that you have a 110vac outlet in good working order!
This may be an instance were the idea was great but the execution wasn't thought out. I've heard of several related problems that may be related. Both the TV and the DVD player tend to produce heat, not in great abundance, but together a sizable amount of heat. The power supply may have been ample for the TV at first but with the addition of the DVD player was not able to handle the extra load. If still under warranty you're all set. If not you might call Akai and see what they might be able to do for you.
This is the best solution for your problem as a 40 year experience with wires etc.
Go to the source of your cable signal connector .
Open it and clean the terminals with emery paper , sand the end of the cable shiny clean from corrosion , get a new barrel connectors with gold terminals if possible lengthen the ends of the cable , insert and tighten good, use thick rg-16 or rg 40 cable with good insulation ends crimped professionally with a crimpier or buy ready made , not from dollar store. Get a gold plated professional splitter if you need one or two , it will cost about 15 or more each . Make the cable runs as short as possible, using the thick good cables. If needed get a signal magnifier. From radio shack or the source etc. Connect them good and tight . Ground the splitters . Problem solved , you will get crystal clear channel 2 to 7 including 3 and 4 . Isolate the TV cable from other cables and power wires.Switch input mode
Vitally
Some 1000uf electrolytic capacitors have failed on the power supply board (3x 16v & 2x 35v radial). You can get them at Radio Shack or your favorite parts house. They are easy enough to replace if you are handy with a soldering iron. If not, bring the tv to a repair shop & tell them that you want the capacitors replaced on the power supply. It shouldn't be too expensive.
To get to the power supply, unplug the set from everything including power. Put the set face down on something soft that won't damage the screen. Remove all the screws from the rear cover, they have arrows pointing to them. When you get to the dvd player, care will be needed to get the cover off.
The power supply board is on the upper right side of the chassis and is not covered by anything. Look for the capacitors that are "bulging" on the top. These will need to be replaced. Good ones look flat on top.
Remove the bad capacitors noting there orientation (they are polarized). The "negitive" side will have a "band" printed on the capacitor. Go get the new ones & replace them carefully aligning the polarities correctly. Reassemble the case & you should be done.
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