Question about Akai LCT3201AD 32 in. LCD Television
Hi Bud (Martin) I have a (almost) dvd 32" RCA LCD + DVD combo. Turns only a dim power (standby) light.
Nothing happens. No bad caps visible. However removing the inverter cable connected to the main (graphics) board make the TV backlight turn BLUE immediately as if the set is ON. Wonder what/where the problem is. Any help shall be appreciated. Cheers!
Posted on Oct 26, 2013
The fault to your TV might not due to a defective capacitor. A higher capacitance valued capacitor, won't do nothing wrong. But as the capacitance value increases, the size of the capacitor will too increase. That's all. Check the fuse at the power supply regulator board. If it is found opened, make sure that something wrong with the power supply regulator board. Without rectifying the fault, never replace a fuse, as it will make things worse. If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window.
Posted on Oct 17, 2013
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Posted on Jan 02, 2017
You need to do more torubleshooting, bad caps can look normal but they can have high ESR which are bad for switching power supply circuits.
Need to check the DC voltages, also try disconnecting the power cables to the backlights inverter board to see if it will come on normally isnce the light blinking can indicating it is sensing shorted circuits so it goes into shutdown/restart mode.
Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
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.
Sorry I cannot find free service manual for you.
Posted on Jan 08, 2011
It is a rough gamble to speculate but if all you have on the PS +5v and +3.3v it's obviously toast.. It would help at this point to have an adjustable dc supply and scope now to trace yest the remainder of the set but for the cost of a good scope you could buy the Tv new... Just going to have to go with your instincts on this one. I could add that usually in lcd cases where the supply has failed it's simply isolated to the supply.
Posted on Apr 12, 2008
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