20 Most Recent Proton MM2701VT 27" TV - Page 2 Questions & Answers

first try to check for the power supply of the TV. the power supply of the TV is located on the place where the main plug of the monitor is connected, check for busted or defective fuse by using a multimeter a defective fuse has no reading on a multimeter. the red line flashes because of a short circuit on the power supply. check for a shorted transistors, diode or maybe a loose connection on the power supply section.may this one help you..

a defective or overloaded power supply or horizontal output stage could create this type of problem

There's a lot of troubles the unit. its probably cold soldered, capacitors needed to replaced, defective power supply and regulator. if you see plenty of moist of capacitor in the surrounding it means you have to replace it, enlarging case or melting tag. some capacitor their feet get rust seem all part were getting worn out. try to soldered the feet of the component maybe there were ring o circle on the lead. There were some cases in physical appearance when you staring on the lead its okay but in the inside where not. i usually was to re-solder stage by stage. then look if improvement on your work. ask me again if nothing happened.

i hope your TV is getting ''off '' by itself when you are trying to turn ''on'' - not when you are watching TV...........then following is the situation ..........IF LED IS BLINKING then---- usually after 4 or 5 yrs EHT ( transformer that supplies voltage to tube ) becomes weak - then TV won't get ON.. means no picture no sound ..but LED blinks - in some TVs along with EHT 1 or 2 components like resistor, transistors, etc will also gets deffective ..........IF LED IS ALSO OFF then on main board in power section area some component is deffective ... MAIN BOARD SHOULD BE CHECKED COMPLETELY........ so solution is TV circuit board has to be checked to find whether only EHT is deffective or other components are also deffective - price of EHT will be between Rs.250 (US$ 5) to Rs.600 ( US$ 12) ........iam from bangalore.....i don't have any idea about EHT component's price & service charge in your area........this problem cannot be solved by user unless user is a technical person having idea about components (resistors, transistors,diodes,...etc..), having multimeter , soldering iron & other tools...so my suggestion call TV service engineer or contact samsung service centre.........

You need to replace the bulb. Look in your owners manual and order recommended replacement bulb and follow steps in owners guide to replace bulb yourself. Its easy. I changed mine in less than 5 minutes.

I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

it could be 1 or 2 problems , 1 u may have bad capacitor on the power supply and thats way the screen is not on , or u may have bad lcd panel , but i have seem alot of this tv with the same problem and most of the time they have bad capacitor on the power supply value 1000uf 25volts or 2200uf 25 volts

I have the turning on an off problem with another TV brand (that is an analog v on a cable converter box) that at times seemed to come from signals from different remote devices in my room, but at other times nothing at all. The on and off times varied from random, to distinct cycles. Some days there's no on and off problem at all.

There's an interesting answer string when looking for "tv turns on and off" that, among a few other answers, many times points to a capacitor going bad.

For more precise ideas, enter in the web search field your make and model with 'turns on and off" and see what comes up. There are some nice repair log stings on the internet now that help too.

This is typical when the set is old as 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.
Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points. Please find below two links for tips on poor start ups, as if the set is totally failed the SMPS might be faulty.

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

http://www.fixya.com/support/r6055091-slow_start_up_circuit_cold_starting

Use good soldering tips to have the dry points resoldered

Hi,

Does you hear the sound / noise ? or after few seconds you could see only blinks?Is there any sequence of the blinks? If yes, kindly mention the same.

Thanks!!

Your TV is being overheated by the location it is placed. try moving it in an airy area and see if the problem still occurs. The turning on and off is a response to overheating sensors in the TV housing and if not rectified it could malfunction and may cause burnout, a possible risk of fire.

I don't know all the facts, but sometimes someone has set the sleep timer without telling someone else. Obviously there are other possibilities. How long does it stay on, are there any blinking lights and does it turn right on again when you try.

no sound

i have a envoy 2007 i have to check the voltage of ignition coil how much it should be each cylinder.

It's more than likely that the white line is from left to right, is that the case?

There can be several causes for this, few of which you can do anything about. However, a few things to try:

1) Replace the batteries on your remote control.
2) Try resetting the logic functions on your tv by unplugging it for a minute, then plugging it back in.
3) Try covering up the infra-red receptor on the front of your TV to see if you're getting unwanted signals from the receptor. taping a piece of foil over that area is perfect. If it doesn't stop after doing these two things you'll probably need to take it to a shop.
4) If this does stop it, then look for unexpected signal sources. Have you added a remote control extender? Added a new device to your audio-video system? Changed to a new remote?

I hope this helps. Joe

017,023,027,038,066,080,091,098,123,125,126,202,203,205,206,207,208,209,210,211....hope this helps..