TV blinks and then no picture at all

Try replacing your AC Adapter

sounds a lot like you lost the video driver or control board functionality. From the 'decay' of your image, with sound still working, and all else being good, you're primed for a new video controller. Are you inclined to do the repair yourself? The service manuals are hard to get online, but the local service center MIGHT sell you one.

I found it on amazon. here UpBright New Global DC 12V 4 Pin DIN AC DC Adapter For Sanyo CLT2054 LCD... . I hope I have helped. Cheers

Tries Ebay.com,Amazon.com have picture look closely.

clt2054 Sanyo vizon 20" TV
At power on my screen blinked on for a second, then went black for a minute or so, then blinked back on, this repeated. I noticed the external 12 volt dc 5 amp power supplys green light blinked on & off with the TV but it blinked off just before the TV did, indicateing that the problem was a power supply problem. Then I put the PS transformer up to my ear and could hear it buzz as it powered on each time. The buzz increased in frequency rapidly then stopped as the internal heat fuze/thermister er something, shut it off for a minute untill it reset. A person could buy a new Power Supply transformer for $14 to $40, or could try to fix their PS. But I simply hooked it up to a 12v car battery & the TV worked. On the back of the transformer is the pinout for the 12v 4 prong plug that goes into the TV. On the TV the bottom 2 pins a 12v+ & the top 2 pins are 12v negitive. Nails with the burrs filed off fit into the sockets, a strip of thin card board between the pos & neg nails for an insulator, & aligator clip jumpers on them to the battery got me a working TV. So I now know it was a power supply problem. I could follow the advice of others on this great FixYa site & try to fix my PS capacitor problem ? Or buy a new PS, or just put the TV in my 12v veggie oil diesel magic buss, er camper thingie. AND please don't send anyone $19.99 for free advice.
I hope this helps someone in somehow.
bitdog

There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Sanyo CLT 2054 flickering problem is a power supply issue. You don't need to replace it if you can desolder, and solder. Break the case apart that is connected to the ac power cord. Remove the aluminum cover from the DC out end of the PCB. Unsolder, and replace capacitors C9 & C12 (1000mf 16v). Super glue the case back together, and watch TV. Good Luck...............Don't use cheap capacitors use caps that have a low ESR.

We had the same problem and it was the ac adaptor which is next to impossible to find. If you find one let me know where?

I have a Sanyo CLT1554 (2 1/2 years old). Has perfect sound but no picture. The picture will come after several times turning it off/on and pressing the Reset button. It is very anoing to do this evey time. PLEASE HELP

I have researched this problem and it is so common we that own this piece of junk ought to form a class action suit and sue. It is caused by a bad part or bad connections to a part called a backlight inverter. It seems the LCD needs a higher voltage than supplied by the 12vdc power pack so this part re-chops the DC voltage to generate the LCD requirement.

The date of manufacture is on the back of these TVs and all the problems seem to be from those made in 2006 to 2008