20 Most Recent Akai PT46DL10 46" HDTV-Ready Television Questions & Answers

tv needs calibration.

If your comfortable remove the back cover and I'm sure you will find a blown main fuse, you can replace it but chances are it will blow again, a new main board should fix it or if your tech savvy you can troubleshoot it yourself, it should be an easy fix with a multi meter

Power supply issues, could be bad capacitors.

Likely an AKAI DLP made actually by Samsung. All 3 lights blinking is lamp failure. You can fix yourself with owner's manual.

Akai PT46DL10 46" HDTV-Ready Television http://www.nodevice.com/manual/newmans/pt46dl10_20_30_dlppdf/get16751.html

I would check the fuse on the power oard its most likley blown . If its blown replacing it may cause it to blow again if the power board has an issue. If you end up needing a power board you can most liklely get one from www.tvcircuitboards.com

There is still hope. The set first will detect if the color wheel is running and at the correct speed--first with lamp removed examine the when to make sure no segments are missing or gone---if the wheel turns too slow the set will detect that and shut down. The fact the lamp comes on rules out most of the time the ballast that fires it but a lamp is still possible.Another thing I do in the shop in this case is put the set on a cart with back off and take outside----use compressed air and blow set out especially the fans and air channels---it would surprise most people to know a little dirt in wrong place can slow fans and set will detect that also---not hard to do and cannot hurt.I have seen a number of Mitsubishi and Sony sets with this issue.A failing color wheel can cause a fan like or high pitched sound but does not always do that.Just some thoughts based on working on Hundreds of these types of sets.

Akai is really Samsung---Remove and inspect lamp to see if shattered inside--it is a cartridge and very easy to remove.With it out look where the lamp faces and see if the color wheel pictured here is intact (no pieces missing etc).

Make sure the door of the lamp is closed.If the lamp is good, you may have a bad ballast or a ballast voltage is missing.www.aaatvservice.com

I actually have the service manual but i will just post your answer

10. Reset the lamp timer by entering the sequence 90918988 on the Remote Control keypad when
running operational software.

Hi,

Please plug it in to other working outlet to confirm that the AC source is not the issue here. Let me know if the symptoms still the same to assist you further.

Jdvillanueva

If there is no power then it is possible that the SMPS has failed. check link at the bottom.

Also sometimes dry soldering is a common fault which can be checked and corrected by you assuming that there is no component failure . There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Check for tips to look into the SMPS unit:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

You can have numerous problems. I have the exact same television in my shop awaiting parts because they are extremely hard to find. The service manual is useless unless you have the diagnositc software adn operational software to properly test the television, so do not attempt to buy a manual online you will waste your money. The television is actually pretty easy to check if you have a multimeter, T10 torx screwdriver or T10 socket, and a philips screw driver. First of all remove the back cover from the television, do not worry about the screen assembly, it is flimsy but it is mounted on the inside to not go anywhere when the back cover is removed. Next remove the black voer that is mounted by 4 torx screws, the cover that has the projector part of the engine assembly sticking through, be careful not to damage the black foam rubber that is around the projector head. Once you have those two covers off, unplug the ballast power supply wire which is the white and black wire on the bottom of the ballast, the ballast is the cicuit board that is mounted in front of the big fan on the right side Also has two wire coming from the top that plug into the lamp housing. With a multi meter check to see if you have power going into the ballast (TV has to be plugged in and turned on to do this step). If you have power going in then turn the television off and unplug it and and plug the power supply wire back into the ballast. Next remove the lamp which is secured into place with the one screw on the left side. See if you have power coming out. If you have power coming out than replace your lamp. If you do not have power going inot the lamp than replace the ballast. If you do not have power going into the Ballast than replace the power supply which is part number DVL-U2830XC good luck in finding that part. If you have power going through to the ballast, and to the lamp and have replaced the lamp than replace the video board Part Number B0001, good luck finding that part. If you have replaced the Video board, ballast, lamp, and power supply and it still fails part your television out and make parts available for other people because the last thing is the engine assembly which costs 2999.00, yes that number is right Two Thousand Nine Hundred and Ninety Nine Dollars. Again, parts are very hard to come by for that model and unless your a customer like that one I have that actually wants it fixed don't bother with it.

Things You'll Need:

• Electrical outlet
• Fuses

1. Check that the power cord is securely plugged into the power outlet.
   

2. Make sure that the power outlet is receiving electricity by plugging a different device into the plug and turning the power on. If the other device does not work you likely have a blown fuse or tripped circuit breaker.
   

3. Replace the blown fuse or reset the circuit breaker as needed. If it happens again, an electrician should assess the problem.
   

4. Contact akai Support if Steps 1 to 3 do not solve your problem. Only a trained service technician should attempt to fix the power problem with your television
   

may be your tv display is broken, change your tv display with new one

The television is actually pretty easy to check if you have a multimeter, T10 torx screwdriver or T10 socket, and a Philips screw driver. First of all remove the back cover from the television, do not worry about the screen assembly, it is flimsy but it is mounted on the inside to not go anywhere when the back cover is removed. Next remove the black voer that is mounted by 4 torx screws, the cover that has the projector part of the engine assembly sticking through, be careful not to damage the black foam rubber that is around the projector head. Once you have those two covers off, unplug the ballast power supply wire which is the white and black wire on the bottom of the ballast, the ballast is the circuit board that is mounted in front of the big fan on the right side Also has two wire coming from the top that plug into the lamp housing. With a multi meter check to see if you have power going into the ballast (TV has to be plugged in and turned on to do this step). If you have power going in then turn the television off and unplug it and and plug the power supply wire back into the ballast. Next remove the lamp which is secured into place with the one screw on the left side. See if you have power coming out. If you have power coming out than replace your lamp. If you do not have power going into the lamp than replace the ballast. If you do not have power going into the Ballast than replace the power supply which is part number DVL-U2830XC good luck in finding that part. If you have power going through to the ballast, and to the lamp and have replaced the lamp than replace the video board Part Number B0001