20 Most Recent Proton MM2701VT 27" TV - Page 4 Questions & Answers

you need to go into the menu and turn off the software upgrade

just did it on mine and it works

check your ground

yes i have the same problem i need help

The bang test is a good indication that there are poor solder connections inside the set. If you can solder and are comfortable working inside the set where potentially dangerous high voltages exist even when unplugged, you can fix this yourself. Look at the main board and resolder any joints that appear grainy or have rings. That should resolve the problem. If not, see if there are any changes in the symptoms and update this.

Dan

This is a good indication that there are poor solder connections inside the set. If you can solder and are comfortable working inside the set where potentially dangerous high voltages exist even when unplugged, you can fix this yourself. Look at the main board and resolder any joints that appear grainy or have rings. That should resolve the problem. If not, see if there are any changes in the symptoms and update this.

Dan

Hello valexandrur,

You are in the correct section, now your problem may be a shorted Integrated High Voltage Transformer (IHVT) also called a Fly-back Transformer and or a shorted Horizontal Output Transistor (HOT). I would first check the Transistor to see if it is shorted between the emitter and collector (to do this use a multimeter set to "Rx1") and the reading between the emitter and collector should be near infinite no reading, if the reading is 000 ohms then the transistor is shorted and should be replaced. Now for the hard part, you technically can not check for shorted transformer turns in the IHVT using a multimeter, you will have to use a device which will allow you to do what is called a ring test. If you do not have this piece of equipment (IHVT tester), I would replace the IHVT just as a matter of good measure, since the HOT had drawn a lot of current I would assume that the IHVT was damaged to since it is in the serial path between the collector of the transistor and the VCC supply.

I hope this helps,

Thank you,

Shuttle83

llc.com/">http://www.electron-age-technologies-llc.com

Its Probably overheated.

happened to me before then i took to fixers and they changed some part and now its fine or if u have a warrenty call the manafactuarer

have you changed contrast

are you sure the button is not stuck?

cant u just unplug from socket

sometimes wavey lines can come from your cable or satelite connections because the wrong size cable was used or there is just a bad connection in the cable somewhere..

sony is a very good brand!!! i have several sony brands in my home. the remote's are not difficult at all... and les_lee you may want to consider this... if you have cable or satelite tv your tv will be operated through that remote you wont even need your tv remote... i hope this helps you out....

It may be that the switch is worn out and needs to be replaced. Or your TV may have "Windex syndrome." This happens when people clean the screen by spraying on Windex and wiping it off like cleaning a window, and some of it runs down and gets on the circuit board front edge where the switches are. It can cause corrosion which leads to intermittent operation, strange behavior, or total failure of buttons. Best cure is to remove the board, inspect it, clean any corroded connections, replace the switches, and check the values of some of the small parts in that area. They can all be affected.

Unless this set is really oddball, it probably has the same type power cord connector used on computers and so many other electronic appliances. If this is the case, you can use a standard computer power cord as a replacement. The computer cord is a three-wire plug with a ground pin and the TV probably only had a two-prong plug, but the cord will still fit. Your electric outlet should be the three-prong type (if it's not, get it replaced!) so the plug will fit.

If the connector in the set is really different, you can check online by doing a Google search for replacement parts for you TV.

You need a new color wheel. Go to www.samsung.com and do some searches. I had to have someone come out and replace mine.

Replace:

Q7461 33725
Q7463 32725
C2455 47uF@50V

Replace:

Q7461 C33725
O7463 C32725
C2455 47uF@50V

cheak bord for hairline cracks on it ok solder them back togther thx nick

oh no!!! your'e in big trouble dude, you should refer that to a liscensed technician since it has problem with a memory. It maybe jammed..

use QT pro to rotate it!