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DP46142 sanyo led tv comes on momentarily then goes to standby mode

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Could be a failing power supply

Posted on May 18, 2017

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Posted on Jan 02, 2017

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Sanyo DP46142 TV comes on for approximately 30 seconds and then screen goes black. Power LED stays on.


Sounds like a backlight problem to me. If you input a signal to the HDMI or Composite input and then it goes black have you tried taking a flashlight to the screen to see if the picture is still there but just dark? That would indicate a backlight issue. That model appears to be an LED edge lit backlight, so if the picture is still there after going black your going to have to trace out the backlight circuit and see whats going on. Usually with LED backlighting if it comes on at all then the LED's are good, its just the driver supply thats failing to keep them on. Some TV's have a small separate board that provides the backlight control, but i suspect with this model its on the power supply board and not the motherboard. Have you checked that board? It could be bad caps on the power supply board, check the voltages to the backlighting when it lights up and then when it goes dark. It could just be some failed capacitors on the power supply causing that voltage rail to drop off.

May 04, 2017 | Sanyo Televison & Video

1 Answer

Lg led tv doesn't turn on


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices....
http://electro-medical.blogspot.com/
If blinks continue without any pause, the main board is faulty.

Jun 20, 2016 | LG Televison & Video

1 Answer

How do you master reset a sanyo 46 inch tv.model dp46142 year 2012


There are two types of reset to TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

Sep 24, 2015 | Sanyo Televison & Video

1 Answer

Sanyo TV turns on and works but standby light not working


Do you mean that the standby LED does not light up; but the set works fine? Of so, either the standby LED is damaged, or it do not get voltage [due to loose soldering or some other reason]. Anyway, the set works fine. Isn't it. It means that there is no other fault than this. Contact any service technician in this case; to find out the reason. Electro help

Dec 05, 2014 | Sanyo Televison & Video

1 Answer

Sanyo tv standby mode


Too little details here - need model, chassis, more specific behavior details.

This may help:
http://blog.coppelltvrepair.com/2012/07/sanyo-dp47460-dp42840-dp46819-and.html
Good luck!

May 06, 2013 | Sanyo 42 in. LCD TV

1 Answer

The TV keeps going into standby mode , comes back to proper picture and with-in 15-20 seconds goes back into standby mode. It happens continueously.


Hi,

May I know if the standby led light at the front panel is blinking, if so please count how many times it will flash to determine the error code? If not follow the steps below.

In standby mode press the button of the remote control in sequence, " Display ", " Channel 5 ", " Vol (-) ", " Power ". Self diagnosis screen will displays. Le me know the result.

Jdvillanueva

Sep 02, 2011 | Sony Grand WEGA KF60XBR800 60" Rear...

1 Answer

I have sony 29'' crt tv . model no KV-DZM61 .when the tv statrs on it shows green led,and after few second the led glows red and it blinked for 2 times .then the tv goes in stand by mode


2 blinks means - over current protection (OCP) , unit goes to the standby
mode then displays the 2 blink fault. Could be a short in the power supply of
any of the circuits.

Jun 23, 2011 | Sony KV-XR29M61 TV

1 Answer

The picture comes for 2 secs on the screen and immediately goes to stand by and red LED Sony bravia standby mode blinks 8 times


the picture comes for 2 secs on the screen and immediately goes to stand by and red LED Sony bravia standby mode blinks 8 times

Nov 19, 2010 | Televison & Video

2 Answers

Tv won't turn on


yes but you have to open the tv

Mar 01, 2009 | Loewe Aconda ACO9303 30" TV

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