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My Laser 30 will not start. I have power to the panel but there is no power to the big red, power button. Has the main switch failed?

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The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit.Contact any service technician.If you wish to get some details; check the site linked here.Pull up older posts.http://electronicshelponline.blogspot.com/It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
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.

Posted on Dec 11, 2016

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Posted on Jan 02, 2017

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I have a th-42px80u panisonic viera turns on for 30 seconds red light blinks 8 times which board do I replace


Hello Charles May,

Top line...
be safe & always verify your CIRCUIT BOARDS YOURSELF.

Typically flashing means the main board has a level of logic that has been offended by the power board... Sounds like you have some experience inside these sets... Never-the-less: Take pictures before you start (good usable pictures, precisely how things are routed)... always wear protection... static discharge (ESD) can DESTROY the most robust circuit packs.

See wristband below... Then look up Tampatec & watch him prove my point when he smokes some collateral packs... but is big enough to admit it... (good viewing).

As for me... the boards are to cheap to be recommending any HOT work... (dangerous)... and you really have ONLY two major boards to try...!

Power board & Main-board... My vote goes to the Power as the first best candidate. (30 seconds usually means cheesy failed capacitor)..

But that's why they call it an iterative process... Besides you always wanted that spare circuit pack.

Careless is the only guarantee you'll get from me. If you go in carelessly... I guarantee you will FAIL.

Good luck.


TV Parts Universal TV Stands DLP Chips ShopJimmy

tampatec flat panel repair Bing video

LSEP1260 Power Supply REPAIR SERVICE LSJB1260 1 LSJB1260 2 TH 42PX80U...

Apr 07, 2016 | Televison & Video

1 Answer

Replaced power supply and reset still on light no sound just a flashing green light


Remove Mains Plug and press Standby switch from LED Panel for 30 sec.
Press Input & Ch Down Switch from LED panel and plug in and start LED
LED will start and "K" will appear on screen
Press Ch Down & Vol Down switch at same time
You will get 1/10 page on screen
Go to 9/10 page by pressing left & right button from remote
Select EEP and press Ok button from remote
After 30Sec remove main plug and restart LED.

Dec 13, 2015 | Sharp AQUOS LC-32D44U 32 in. LCD TV

1 Answer

After replacing power supply and resetting tv still only have green flashing light


Remove Mains Plug and press Standby switch from LED Panel for 30 sec. Press Input & Ch Down Switch from LED panel and plug in and start LED LED will start and "K" will appear on screen Press Ch Down & Vol Down switch at same time You will get 1/10 page on screen Go to 9/10 page by pressing left & right button from remote Select EEP and press Ok button from remote After 30Sec remove main plug and restart LED.

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1 Answer

Como soluciono error c-9401


the bright light under the big glass failure to turn on, raise the doc feeder then hit the start button to copy something a very bight light should come on, if not get the exposure lamp and or board replaced

try this once if the code comes back do above

1. Turn OFF the Main Power Switch.
2. Turn Main Power Switch ON again while pressing the Utility/Counter key more than
10 seconds after.
3. Touch [Trouble Reset].
4. Check to make sure that [OK] is displayed and the it has been reset.
5. Turn off the Main Power Switch and turn it on again more than 10 seconds after, and make sure that the machine properly starts.

Feb 14, 2014 | Konica Minolta bizhub C351 All-In-One...

1 Answer

Tv will not turn on anymore. when you press power button the light turns greennand the red light flashes at the same time. then nothing


This is more than likely a main board issue.
Try a mains reset. -Remove all the cables from the TV and unplug from the wall -Press and hold the power button on the TV for 30 seconds -Plug back in and try and power on
If this fails seek an engineer for a repair.

Apr 25, 2011 | Televison & Video

1 Answer

Will not power up. Stays in standby mode.


these particular tvs are very sensitive to voltage changes spikes etc.first turn off main power switch wait at least 30 sec if standby come on wait another 30 then turn off main power again and unplug tv for 1 min then plug in turn on main switch wait 30 sec then turn on tv with remote resets system.then buy a ups and always wait at least 30 min after turning tv off to turn back on if not causes power failure and after each press of power button wait 30 seconds before trying again lmk good luck

Jan 08, 2010 | Hitachi 42HDS69 42 in. Plasma Television

2 Answers

I have a Viewpia LC-32IE21H which does not want to switch on.


For a three years old set, first place to look is the main power supply capacitors, at least the 5vdc standby circuit is working, the problem can be as bad as the main controller board, but look at the power supply first.
http://en.wikipedia.org/wiki/Capacitor_plague

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1 Answer

Car doesnt start at all !


check battery
check fuses & wiring to starter
check power at starter main (big red wire)
check for power at starter solenoid (small) wire when key turned start position
if all above are good, try whacking starter body with a hammer lightly while trying to start, don't run yourself over if it does!
replace starter if all electrical good

if all electrical fail test/inspection, ei; no power to starter on small wire, yet big wire hot, check for bad ignition switch

check for

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1 Answer

HP designjet 430 E Plotter


The reason it could be the main board is that it tells the front panel lights what to do. This seems like a logical problem the printer is having, usually things freeze when internal memory is bad. Surely have the main board replaced. There is a part of the internal programming that it cant get past. Compare it with trying to read a sector of a cd-rom that is scratched.

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