20 Most Recent Akai LCT2662 Television Questions & Answers

make sure the caps you installed are the exact replacements. Changing voltage capacity or timing will cause the circuit to fail.

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Tyler

You're getting some feedback on the secondary transformer - most likely... Try to isolate where the pitch is coming from and see if it's harmonic. May just need to be glued down or have some leverage place against it...
Bill

Power supply problem or something in set (anything) triggering set into protective shutdown.

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Tyler

Did you get this fixed?If you have any questions,please let me know.Thank You very much!


Tyler

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

Hi,
Please confirm model number of Akai tv as questions shows it is LCT2662 number.
This will help me to find out related table stand.
Thanks.

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Tyler

Are you still having trouble?Please let me know.Thank You very much!
Tyler

Have you fixed this yet?Please let me know.Thank You very much!
Tyler

This is a typical power supply problem. Please check the B+ Power Supply that goes to the LOT (FBT). It should be 110V. If that is ok, check the voltage while increasing and decreasing brightness, sound. If there is variation, the problem is in the SMPS. Look for dry capacitors, open/high value resistors, zener diodes, transistors etc. If nothing works, please download a data-sheet of the IC and check voltages at the pins and locate the adjacent components. Even a dry capacitor in the power supply can decrease the votage at load

i t may be easy fix if the module is bad, but you need to so some checking first to narrow down the problem. There are two most common failure baords: Power supply and backlights inverter boards.
Right now it goes into shutdown which can be caused by fault in the power suppy (bad caps with domed tops), or it detects shorted circuits (most of the time will be the backlight inverter board since this board drwas the most power from the power supply). You can disconnect the power cables to the backlights and see if the green light will stay on.
So please read my guides first to see if you will want to DIY repair or not. The least you can do is to inspect the power supply module for bad caps first.
You can see the pictures and the price of the boards here:
http://www.shopjimmy.com/catalogsearch/result/?q=Akai+LCT2662+
Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Parts: www.shopjimmy.com Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps. Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series. Please post back what you find. Please leave rating if it helps.

Call 800-726-4405 - if the television cannot be fixed because the parts are not available the television must be exchange - by law

Hello,

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to.

I do not think it needs replacement, rather some defective capacitors are causing this issue.
Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others. Also, there is a flyback transformer in the TV that can cause this type of problem.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors).
After replacing these capacitor(capacitors) most likely the normal operation will be restored.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Good luck.

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

Are you still having trouble?Please let me know.Thank You very much!
Tyler

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.