Question about Hitachi 42HDS69 42 in. Plasma Television

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No power indicator lights not on followed procedures

Used extension cord to make sure it was getting power, Used volt ohm meter to check cont. at plug and it showed open on both positions on off/on switch

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  • edwardwinsto Nov 12, 2008

    Power indicator lights do not come on. Pluged it into a extension cord that I know works and nothing happened. Power at receptical is 120 Volts. The problen is not with ehe extension cord

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With extension cord no power. How about without extension cord ?

Posted on Nov 12, 2008

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Hi,

Offhand, a no reading on the continuity does not necessarily mean that the fuse is blown though of course it is a possibility. Since most current designs of power supplies uses SMPS (switch mode), there would be no apparent resistance measurable at the AC plug. This is unlike the conventional power system where one can measure the primary windings of the transformer of the power supply. Further diagnosis of course would require a fair familiarity of electronic components/circuitry and safety procedures, continued use of a DVM and perhgaps even a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Posted on Nov 12, 2008

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HI THE POWER INDICATOR LED HAS GONE YOU CAN SWITCH A NEW ONE

Posted on Nov 12, 2008

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  • Hitachi Master
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If there is no continuity on the extension, then the extension is faulty.

Posted on Nov 12, 2008

  • Ginko
    Ginko Nov 12, 2008

    If you use the multimeter on the two different pins of the extension plug (the one that goes to AC socket, getting open is normal.

    You need to check continuity with the multimeter at the two ends of the extension, on the same cable.

    I am not sure if this is the problem, please re-state,


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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://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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I have had some issues with high ESR readings in the capacitors in the scaler circuits in those units. Do you have an ESR meter to check the caps in circuit?

May 14, 2008 | Hitachi 55HDS69 55 in. Plasma Television

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Hello I've have got a Panasonic TH-50px80u No power I remove the rear pannel and used a volt-Ohm meter to meter the two t8ah fuses they were both open i replace, they aga


Replacing and configuring a main power board to a Plasma display is not a simple job as you thinks. With only a multimeter, you can't do anything. It is a skilled work. Contact any experienced service technician. If you wish to get more details about the repair process of plasma displays, check this link. If you are not familiar with electronics, do not attempt to repair. Whether you suffer fatal electrical shock! Instead, contact the nearest service center.

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Power supply problem no switching


( "Power Supply Problem Not Switching "???? )

How do you know it's Not Switching? Do you mean the TV wont turn on when you push the power button on and off on the TV and also with the remote control unit? Is that what you mean? If YES! Then, If your Vizio TV wont turn on and has NO-PICTURE, NO-SOUND and a BLACK SCREEN, Then the TV has an AC or a DC Voltage Problem.

1 - First, check the wall outlet socket by pluging in a lamp to see if you have 110 AC-volts there. If the lamp works, the wall outlet is OK! That means the problem is inside the TV.

2 - Before, you remove the back off the TV. I want to *(CAUTION - YOU)* The Power Voltages inside your TV are Very, DANGEROUS!!! There is 110 AC Volts at a 20-AMP-Rating ***CAN BE A LETHEL DEADLY SHOCK HAZARD to HUMANS!!!*** Also there are DC Voltages ranging from 3.3 to 24 volts. And R-F- VERY-HIGH-VOLTAGE of 20,000 Volts or More.

3 - You will need hand tools and a Digitle Volt Ohm Meter to check AC & DC Voltages and the OHMS Meter section to check resistors, capacitors, coils, grounds and contacts.

4 - With the Back removed, and no-power to the set. Inspect the power board for any signs of BURNED, LOOSE or BROCKEN parts like resistors, capacitors, coils, fuses on all boards. If you discover damaged parts, make a list of them. Then you must deside if you are qualified to do the on board repair or just order a new replacment board.

5 - If on the other hand you didn't discover any damaged parts by your inspection, It's time to put the Meter to good use. Plug the TV power cord to the wall outlet. Set the Meter for AC - voltage range of 200 or more. check for 110 AC volts going to the power supply board fused inputs.
If NO replace the cord. If YES, look on the board for voltage test points marked on the board. (SAMPLE!) 3.3 vdc, 5 vdc, 12 vdc, 24 vdc, and so on. Set Meter for DC Volts now, range 50 to 100. Put the black lead to ground and the RED lead to each test point marked on the board while repetetedly pressing the TV power on & off button..

6 - If ANY of the DC voltages were LOW, WRONG or MISSING, The Main power board is defective and needs to be removed and replaced with a new one. Write down the board number that is on the board and use that number to order the new one. You can order it on the Net!

*****(NOTE)***** If you are not an electronics tech. don't try to fix the old defective board... but, keep it handy, you might need it for parts later. :-)

Hope This helped... GOOD LUCK! NOW, GO FIX YOUR TV!

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Hi, i am having problems with my TV since day


Hello sir Ibsen,

The first thing I suggest is to check the power cord and its connection if the light indicator on the front of TV won't turn on..Used multimeter or volt meter (range to AC) to measure the voltage..If no voltage,replace the power cord because the cord have internal wire break or open connection that can't visually check..

If the power cord is good,the possible problem is power supply board inside..
2_21_2012_1_52_43_pm.jpg
It cost $89.95 to this site http://www.shopjimmy.com/lg-6871qih001a-power-supply-unit.htm
But before you decided to replace the power supply board please try to reset or reconnect all connectors on all boards inside specially on power supply unit..

Also I remind you when the TV already open the warranty will void...

If you more queries and clarification please feel free to reply to this tread..

Hope this solution will be helpful..Thanks for using fixya marketplace and choosing my service..

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1 Answer

Turned my sanyo dp42410 off last nignt and now it wont turn on no led light on he front nothing


Good day!

The problem of your TV is on the power supply.
Please follow this procedure for D.I.Y troubleshooting.
  1. Remove all screws at the back.Open the cover.
  2. Power ON the TV.Check the input voltage of power supply from the cord.If supply form the power cord replace it.
  3. If you have voltage supply from the cord.Check output voltage form the power supply board and for sure you have no supply on it because the indicator didn't lights up.
  4. Check your power supply board such as fuse if busted,power transistor and diodes if shorted,open/change value resistor and leak/bulge on top capacitor.
  5. If you found that replace it and try to power it on again.Then check the output voltage such as 5vdc for the system board,12vdc for the sounds and 24vdc for the inverter.
  6. If you got that 3 supplies your TV is OK.
Note:If this procedure is not fix your problem it means the power supply got a major trouble and not for D.I.Y..I suggest to you as a technician to buy a new power supply board or give to the qualified technician.

I hope this solution will be helpful.Thank you very much and good luck.

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Hi i just replace a new lamp for my panasonic but the message on the screen still show u need the reset the lamp hour meter ! please show me how to reset the lamp hour meter


Be sure the power cord is plugged into a properly grounded wall outlet. Then, press the POWER button on the projection display or the remote control to turn the unit on.


While pressing the VOL- button on the projection display, hold down the PIP or SPLIT button on the remote control at same time for more than 5 seconds.


When reset procedure is complete, the screen will indicate that the lamp has been reset!


NOTE: When lamp time reset is finished, the LAMP indicator goes out!


Tom Miller

Broadcast Eng

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OK you need a volt meter to check the voltage output of your power pack as two things cause this now enough power out the pack to run your unit or the unit has a short both problems will unlight the light so you need to know if the power supply is working right first as it should say like 120 volts AC in and 12 volts DC 1000 ma out so you will need to mesure this with a volt meter. this is a common problem loading the load of the curcuit as in your TV is mor the the power pack is giving out thus shorting out the power pack of any voltage present, as the little LED light your seeing only takes 5 volts at very ittle current to light and dose not repersent the total voltage output of the power pack itself

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just check the AC wall outlet by using volt meter tester,if the outlet ok check blown fuse if ok proceed to power supply section.

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first.............. check ground of cable and circuit

second.......if ground is ok extension cord to different circuit and
test

third .........if problem cont. call heating & cooling co.
please reply when you find out
and use your power to vote


p.s GOOD LUCK!

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