Question about Akai LCT2662 Television

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Akai LCT2662 won't turn on, indicator solid orange

Akai LCT2662 won't turn on, indicator light solid orange. Visually inspected caps in power supply, does not appear to have bulging or leaking caps. Other ideas?

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Electrolytic Caps do not always fail visibly.

Power up the set with the back off it so you can check some voltages on the power supply.

Mainly what you want to check is the 24 volt supply to the inverter baord. With set on, there should be 23 to 27 volts present. If not- power down and unplug set and let it sit for a minute for capacitors to discharge. unplug the connector for the 24 volt supply to the inverter board if it is seperate from the power supply. plug it in and power it up again and see if the 24 volts is present. If it is, Check the inverter board capacitors. Visually and with a capacitor tester. and reflow any questionable solder connections on inverter and power supply board.

If 24 volts is not present- recap the 24 volt section of the power supply and check the solder connections in that section- reflow any of the questionable solder connections. Plus test the power devices in power supply, sometimes a couple MOSFETS and sometimes several bipolar transistors.

If 24 volts was present and the inverter board checked okay visually, reflow all solder connections on inverter and test the switching transistors- some will need to be removed from circuit if they initilaly test bad- this can happen with the low inductance of the inverter transformers. Test capacitors or just replace them outright on inverter and power supply board.

Posted on Feb 07, 2012

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Any luck getting this fixed?Please let me know.Thank You very much!
Tyler

Posted on Aug 12, 2010

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1 Answer

I need to know the amp size of fuse to replace on AKAI LCT2662. thanks


If you have the original fuse, it's the number stamped on one of the end caps after the three letters denoting the fuse type. Most manufacturers also print the fuse rating on the power supply circuit board ("Caution: replace fuse only with...")

I have one of these sets in the shop now, but I haven't opened it yet. Post a reply if you can't find the fuse type and rating, and I'll let you know what my project uses.

I assume you already know fuses in TV sets don't blow by themselves, but indicate another part is shorted. Check the diodes, transistors and power ICs in the power supply before plugging the set in. If you see any bad capacitors, fix those also.

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My lct2662 will not turn on. The indicator light


Did you get this fixed?Please let me know.Thank You very much!

Tyler

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LCT2662 turns on, no picture


Mine is the 5volt regutator. It works fine untill I put a load on it then it craps out. Need to know what the 5v regulator part # is.

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1 Answer

Are you willing to fix a power supply for a Akai lct2662?


You may have inadvertently swapped one of the caps and didn't install it in the correct polarity... Or one or more regulators are also bad... Or there may be some more and severe damage caused by the swollen (popped) cap - especially if the cap was in the 100mf range or above...
Can't really quote something like that until I was able to see and test it. However, I will charge the same as our shop rate: $29.95 plus shipping for the estimate and based on the estimate if you choose to have it repaired I'll waive the $29.95 - shipping is repaired or not.
Bill

Jul 25, 2008 | Akai LCT2662 Television

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Akai


have akai lct2662 screen is bad power supply and board ar good tom.schulty@gmail.com

May 09, 2008 | Akai LCT2662 Television

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Power supply most likely... It's a common problem with this particular model and we've seen quite a number of them for exactly what you're describing.
You need to replace 19 caps in the power supply 4) 3300uf/35v, 8) 2200uf/25v, 6) 1000uf/10v, 1) 1000uf/16v and you can go a little higher in the voltage of each cap for greater reliability.
It's best to have an ESR meter also and test the remaining caps as well.
Bill

Mar 18, 2008 | Akai LCT2662 Television

1 Answer

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Power supply most likely... It's a common problem with this particular model and we've seen quite a number of them for exactly what you're describing.
You need to replace 19 caps in the power supply 4) 3300uf/35v, 8) 2200uf/25v, 6) 1000uf/10v, 1) 1000uf/16v and you can go a little higher in the voltage of each cap for greater reliability.
It's best to have an ESR meter also and test the remaining caps as well.
Bill

Mar 18, 2008 | Akai LCT2662 Television

1 Answer

My tv won't turn on


Replace 19 caps in the power supply, 4) 3300uf/35v, 8) 2200uf/25v, 6) 1000uf/10v, 1) 1000uf/16v and ESR the remaining caps for good measure. That should repair the problem in about 99% of the cases. I do several of these a month...
Bill

Oct 05, 2007 | Akai LCT2662 Television

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