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EMERSON TV MODEL EWT2721

I HAVE NO POWER AT ALL, NO STAND BY VOLTAGES, NO VOLTAGES ON TRANSFORMER T601 ON THE SECONDARY, ONLY ON THE PRIMARY I HAVE 169V

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Unplug your tv and check the volts in primary capacitor .if it will not discharge the regulator IC is bad .



Posted on Oct 11, 2008

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Jvc tv model av dx25,power on but no raster and sound


if you want to do it with your own, you will need a proper trouble shooting. which need the right device and tools to do the job and make sure you have at least a basic knowledge in electronic repair. the first place to be check will be the power supply section, you need to have voltage checking weather their is a secondary dc voltage from the power supply section going to the horizontal section. to turn on the other circuit and the flyback transformer. you have to know if their is a 135dc voltage at the power supply section,check at the primary capacitor using a digital tester.

Nov 28, 2012 | JVC Standard (CRT) Televisions

1 Answer

How can i fix emerson standard tv model # EWT2721 no sound but perfect picture


Check the audio output section circuit and speakers for fault. You must have sound knowledge in electronics to check the audio output circuits.

Jul 04, 2012 | Emerson Standard (CRT) Televisions

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Will not power up----stand-by light blinks 6 times then pause..then 6 times,,and so on Its a Sony WEGA 32"


Hello

Six blinks of standby light in sony sets denotes the Horizontal Oscillation and output stop. It may be due to an Ic fault, or faut of some capcitors, or horizontal output trnsformer [LOT] or related component failure.
You must have a digital multimeter which can count frequency and have a concept of soldering. Just chek first for the secondary regulated main voltage [135VDC], ath the secondary side of SMPS. If it is ok, go to the line driver transformer, a small transformer fitted on the main board, very near to the LOT. Check its primary winding side for open circuted or not. If not check the voltage at the primary winding of that thransofrmer. Its one end is connected to the horizontal driver transistor. Measure the frequency at this point if there is voltage. It should come around 15.5KHz. If not suspect the horizontal video jungle Ic. To confirm whether this IC is faulty you must have the ability to follow the schematic diagram of the Tv, and some skill and experience in service.
If you have confidence inform me through Fixya. I'm ready to assist you. OK.

Jan 02, 2011 | Sony FD Trinitron WEGA KV-36XBR800 36" TV

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My 36xbr800 blinks six times then pauses then blinks six times, this is repeated......


Check the voltage input to horizontal output transformer [LOT]. Check the voltage at the collector point of the line drive transistor. If the line drive transformer primary gets open this type of fault mau occur. Also check the frequency ant the collector point of line drive transistor and the base point of line output transistor. It should be aroung 15625 Hz.
Check and replace the horizontal output transistor if needy. Replacing it is better. The horizontal output is not working or a short in secondary power supply of SMPS or lot secondary, is your problem

Oct 14, 2010 | Sony FD Trinitron WEGA KV-36XBR800 36" TV

1 Answer

MY RCA 27" WILL NOT TURN ON, HAVE POWER TO THE FUSE, THE FUSE IS GOOD ALSO BUT THE DEGAUSS RELAY DOES NOT CLICK AND NO OTHER CLICKS ARE HEARD EITHER, WHAT COULD BE WRONG?


you need to check the voltage output of your power supply section.This power supply supply is a switching type power supply.there is a chopper transformer in there.its supply is a dc voltage unlike any other transformer which is AC supplied on the primary..First step.
1.Using a multitester measure the primary supply it is a DC voltage around 220v - 110 VDC
2.Measure the secondary output.The out put is AC voltage the supply for the B+ going to plyback is 115vdc the second output is 12v run through a regulator and the regulator lower the voltage to 5vdc.this 5vdc supplies the system IC and the jungle IC.this ic process the switching of the plyback transformer and the plyback transformers output supplies the voltage of the whole system including your relay in the degaussing section....once the plyback is activated the tv will now turn on...

good luck!Hope i helped you..

please rate my help..god bless!

Jun 13, 2010 | RCA F27641BC 27" TV

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Color are very off on my emerson EWT2721


Hey just go to menu- picture, and increase your contrast, brightness, and/or tint.

Jan 13, 2008 | Emerson EWF2703 27" TV

1 Answer

Dead KONKA 21 inch TV


try Check first all the output voltage in the secondary of the chopper transformer if regular voltage acquire. check secondary switching circuit feedback towards the opto isolator and syscon.
Assuming that HOT is OK.

Nov 01, 2007 | Standard (CRT) Televisions

1 Answer

Emerson EWT2721 will this TV support a Sony DVD recorder?


If you do not get result you can purchase one video rf converter. Rf converter contains one videoinput in yellow colourand two audio in red and white colour and one cable connector as outout. Connect dvd output to this converter and tune the program in whichplace you receive dvd signal. good luck

Sep 20, 2007 | Emerson EWF2703 27" TV

1 Answer

TV is not coming on.


The model you have has a very common problem and that would be the main Hi-voltage transformer (the flyback) , the horizontal output transistor, Horizontal drive coil between the secondary of the horizontal drive transformer and the base conection of the horizontal output transistor and/or the resistor that feeds the b+ to the primary of the horizontal driver transformer. All or part of these will be the bad componets. Now if you have never had any experience replacing solid stse componets then you should leave this reapir to the pros, as there will be soldering involved as well as the HI voltage safety issues to deal with. Good Luck

Jun 21, 2006 | RCA F32450 32" TV

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