Question about Sanyo DP42746 42 in. Plasma Television

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Sanyo model# DP42740.Turn it on, green led lights up,can hear relay click.Then led goes off relay also.Checked unit Vsus and other voltages are there,no shorts or burnt parts any help?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

taran_2005
  • 10515 Answers

SOURCE: Sanyo DP42740 tv turns off and on by itselfl It

Hi,

Unplug the TV for few minutes, say 30 minutes and then turn it ON. If it still does not work,it confirms an internal failure. The main cause on this model is ' power supply board '. Other than this, even the faulty boards could cause the same problem. The TV has to be opened, carefully inspected and then the part has to be replaced. If you have electronics repair experience, could read schematics, would be able to use multimeter and could keep all precautions, revert and i could tell you where you could buy a cost effective service manual and would provide you few pointers that would help you to fix this problem.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Oct 02, 2010

  • 8457 Answers

SOURCE: i have a sanyo vizon 50" tv that wont turn on. the

Power supply board have problems,not giving the tv,the right voltage anymore,that why the LED power light indication go off.The power supply board,that the board,where the power a/c plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Posted on Oct 13, 2010

  • 718 Answers

SOURCE: Is there a manual to

Yes. You can get the tv manual from;
http://us.sanyo.com/Plasma-Televisions/42-Class-41-6-Diagonal-720p-Plasma

Click on the Download tab then click on the manual icon. The remote control operations are explained.
The manual is in PDF format so you will need ADOBE reader to read it. Most people have ADOBE
but if not you can download the reader from www.getadobe.com.

Posted on Apr 15, 2011

Testimonial: "Thanx! Problem solved."

  • 375 Answers

SOURCE: How do we hook up

Hi Amy,

I cant see any specific connections for your tv but the end of the cable from your wii will have either a 21 pin sc"scart" connection or 3 plugs,(red, white and yellow) Look about on the back of the tv for corresponding socket. There should only be a couple of choices for each. Then simply plug it in. There will be no tuning or anything to do as these are direct connections. On your tv remote look for a button which will display or select the direct inputs. May look like a small screen shape with an arrow pointing into it, or may say "ext" or similar.
Hope this has been helpful

Posted on May 07, 2011

  • 586 Answers

SOURCE: dp42740 had bad ss board replaced same symptem

Hello there,
It is quite obvious that it is not the ss board that need to be replaced or the board was not replaced properly. Have the lamp replaced. Then check for bad capacitors on the power panel, then you check on the main board for bad capacitors also.
After doing this. Ensure there are no cold joint on the main board and the power board also.
That should solve the problem for you. All the best. Elect_Comp

Posted on Sep 06, 2011

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1 Answer

I have a Sanyo dp42740 plasma TV , the green light on front comes on for about 2 seconds and goes off. what is it?


Hi Gray,
Please try giving 13V from external source. When we exhaust all the options of changing boards we try such things to get the set working. I hope it helps.
Good luck

Aug 04, 2015 | Sanyo Televison & Video

2 Answers

Mitsubishi Medallion does this


hi there,

Check for bad solder on convergence module. May have bad stk's. Do not neglect looking for bad solder on dsignal and defl boards. Mitsubishi is very prone to bad solder.

`jack

May 26, 2008 | Mitsubishi WS-55411 55" Rear Projection...

1 Answer

I have a Sansui HDPDP4200. It will not turn on. I did notice a green flashing led inside the back. Any Suggestions? I am also in the market for a schematic for it but have not been able to locate one


More than likely a power supply board issue. Unable to supply the correct voltage. If you can find out how many flashes the power light goes on/off. This is a key information to know what diagnostic it is giving you. Plasma's could be trickey as it could be the power supply or an Inverter board to try and power up the plasma screen.

Dec 07, 2014 | Sansui Televison & Video

1 Answer

What causes the sanyo DP42740 plasma tvs green power light turn on and off?


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.Viewing it in "Mosaic" or "Magazine" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given.Surf the site with patience.

Aug 02, 2014 | Sanyo DP42746 42 in. Plasma Television

1 Answer

My new visions t9550 treadmill will not calibrate. it completes the speed calibration but treadmill will not elivate therefor fails calibration. what do i do?


Step 1:

follow this steps for troubleshooting and fix it. God bless you

The SCR lower board is designed with diagnostic LED lights. The LED's are color coded according to

their specific function. Green indicates a properly operating treadmill; the green lights should always

be ON when power is supplied to the treadmill. Yellow indicates a treadmill function. Red indicates a

treadmill malfunction. Here is a list of each LED and what it signifies:

MOTOR (yellow) - The MOTOR LED illuminates when dc (direct current) voltage is sent to the drive

motor. The LED gets brighter when the dc output is increased.

RLC (yellow) - The RLC (R = Reactance / L = Inductance / C = Capacitance) LED illuminates when

the filtering system is properly working. The filtering system includes the capacitor and filter choke. If

there is a short in either component then the RLC light will not come on.

DN & UP (yellow) - The DN and UP LED lights tell us if the elevation DN and UP relays are

functioning properly. When the LED lights, it tells us that the relay has energized and is sending high

voltage (110vac or 220vac) to the elevation motor.

AC PWR (green) - The AC PWR (Alternating Current Power) illuminates when AC line voltage is

delivered to the treadmill. It then passes through the in-line fuse (110)/s(220) and lights the AC PWR

LED.

+12V (green) - When the proper AC voltage is delivered to the treadmill, passes through the in-line

fuse/s, through the full wave bridge rectifier (changes AC to DC), through the transformer (steps down

Step 2:

DC to +12vdc) then the +12V LED lights.
This the board LED, who control the signal for Main Motor+Elevation Motor. You must see, the LED DN+ UP( both will be Lit) in any position down or Up.

2) The RELAY board is designed with diagnostic LED lights. The LED's are color coded according to

their specific function. Green indicates a properly operating treadmill; the green lights should always

be ON when power is supplied to the treadmill. Yellow indicates a treadmill function. Red indicates a

treadmill malfunction. Here is a list of each LED and what it signifies:

AC PWR (green) - The AC PWR (Alternating Current Power) illuminates when AC line voltage is

delivered to the treadmill. It then passes through the in-line fuse (110)/s(220) and lights the AC PWR

LED.

VDC (green) - The VDC LED will light when it receives DC voltage from the DC power supply.

DN & UP (yellow) - The DN and UP LED lights tell us if the elevation DN and UP relays are

functioning properly. When the LED lights, it tells us that the relay has energized and is sending high

voltage (110vac or 220vac) to the elevation motor.

UPSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper display

board to the elevation UP relay. This low voltage dc is what energizes the coil of the relay.

DNSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper display

board to the elevation DOWN relay. This low voltage dc is what energizes the coil of the relay.

BELTSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper

display board to the belt (motor start) relay. This low voltage dc is what energizes the coil of the relay.

SPD (yellow) - The SPD LED flashes on and off (relative to speed) when the speed sensor is

operating properly.

PWM (yellow) - This LED will light when the upper board is sending a speed signal to the PWM.

Both the PWM LED and BELTSW LED must be lit for belt movement.
Finally this this Relay Board, the Each Led will be Lit, for any Relai control for DN down, or UP for elevation Motor. You must clean contact of the Relay with Special Spray(Radio Schack).

With this you must fix it.

Step 3:

Try this again. and fix it.b) LUBE the gear motor, shaft and turn the POT a little and see if the motor get RPM.

The Steps for Newer Style Console Calibration:

  1. Locate the calibration area on the rear or underside of the console (a hole, near the console's center, that goes through to the electronics board. (This hole should not have a screw in it.)

  2. Insert a pencil (eraser end), into the hole and feel around for the cal button (will click when pressed).

  3. Press the button 2 times (with the pencil eraser). The first click should show CL11 in the console, the second click should show CL21.

  4. If the process was done correctly, and CL21 appears in the console, you are in "calibration mode." The next few steps consists of pressing buttons on the console and observing settings. This will not require any other tools.

  5. Press ENTER. CL22 should display in the TIME window and (??) in the SPEED window.

  6. Press ENTER. CL23 should display in the TIME window and (??) in the SPEED window.

  7. Press ENTER. CL24 should display in the TIME window and (??) in the SPEED window.

  8. Press ENTER. CL25 should display in the TIME window and (??) in the SPEED window.

  9. Press ENTER. CL26 should display in the TIME window. You should then see the letter "E."

  10. Press ENTER. You should see "SS" or "55" in the console.

  11. Push the STOP/START button. For safety, at this point, you should step off, or be off, the treadmill.

  12. Push the ENTER button. The walking belt should start to move, accelerate to maximum speed, then stop on its own.

  13. When the belt stops, the incline should self test by raising to its highest incline position, then lowering back down to its lowest position.

  14. Once the incline test is complete, push the POWER button 2 times. The unit should shut off and the console should go completely blank. If this happens, the treadmill is done calibrating and is ready for use.

  15. If the letter "F" appears in the SPEED or INCLINE window when the power button is pressed 2 times, the treadmill is indicating a failure somewhere either in the SPEED or INCLINE (depending on the window the "F" appeared in).

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Jan 07, 2013 | Vision Fitness T9550 Folding Treadmill

1 Answer

I have a sanyo vizon 50" tv that wont turn on. the green light comes on and the relays click but nothing happens and eventually the light goes off. any advice? thanks


Power supply board have problems,not giving the tv,the right voltage anymore,that why the LED power light indication go off.The power supply board,that the board,where the power a/c plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Oct 13, 2010 | Sanyo Televison & Video

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