Question about Miller 907068 MILLER TRAILBLAZER PRO 350D KUBOTA DH905

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No power coming out of leads?


I think i''ve blown the main circuit board on this unit.The one with the dials. I've still got power to the 110 but it sure makes the grinders wind out. There is only 3 boards And am hoping it's only the one burnt out.. Any suggestions on where to buy the boards cheap, or better yet if i can send this board somewhere to get looked over and fixed? Thanks

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This really needs to be looked at by a Miller Authorized service center....sorry but it is the truth.

Posted on Mar 12, 2009

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Posted on Jan 02, 2017

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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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1 Answer

Problems with screen


It is due to power supply regulator fault. Check the main power supply regulator section circuits for any damaged [bulged] electrolytic capacitors. Replace the suspected capacitors. When replace an electrolytic capacitor, make sure about its polarity. Like torch batteries, these capacitors also have both [+ve] and [_ve] terminals, and should match it with markings at the printed circuit board, when replace them. If the polarity changes when replacing them, they might burst out. Normally, [-ve] marking will be there on its body. See the example of the suspected component. Both good and damaged. See the bulged capacitor and good one on the same frame.
7_12_2012_2_53_53_pm.jpg
Bulged [damaged]
7_12_2012_2_54_50_pm.jpg
Damaged
7_12_2012_2_55_19_pm.jpg
All of them damaged
7_12_2012_2_56_05_pm.jpg
good one with [-ve] marking
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Good one with [-ve] lead marking..

Jul 12, 2012 | Polaroid TDA-03211C 32 in. LCD HDTV

1 Answer

My aprilaire 700 isn't coming on (no water flow). The front part of the unit has fallen off the furnace twice (held on by plastic nubs/slots...) and blew the furnace fuse/ and circuit breaker probably...


Check for voltaged at the solenoid valve. This will either be a 24 volt or 110 volt solenoid valve. Confirm power into the unit 110 volts. If you have power into the unit and no voltaged at the solenoid valve on a call for humidification at the humidistat than the circuit board or the step down transfgormer has failed.. If you do have voltage at the solenid valve than the valve has failed.

Jan 26, 2011 | Aprilaire 700 Humidifier

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I have a viking 1100 sewing machine that the power will not come on


Either the fuse in the power supply unit has blown or your main circuit board has failed. Take it to a service person for a diagnosis.

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1 Answer

My Asko Dryer has power coming into the main board but the unit is dead. Can there be any other problem other then the main board being bad?


The first thing I check is the electric plug at the wall outlet to make sure I have 220 volts you will need a electric test meter If you are not comfortable with this you need to get a licensed electrician, with a ohm meter you can check the limit switches and the door switch with the power off at the breaker. one of the 110 circuits run the motor the other the element.

Apr 16, 2010 | Dryers

2 Answers

LG Washer wont start, no power


Make sure there's power getting to the washer. Check for a tripped circuit breaker or a blown fuse. Check the wall socket for power. Sometimes the power cord disconnects at the washer, if this is the case, the wiring must be repaired or replaced.

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3 Answers

Toshiba 57H81 Flashing Red Power Light, Blown Fused F850+F852


Solved by resoldering some solder joints!!!!!!!
********
Toshiba Model 57H81 Rear Projection TV - Purchased 11-09-2001

Problem: Toshiba 57H81 Flashing Red Power Light, No Picture/Sound, Blown Fuses F850 + F852

Symptoms January, 2009:

  • Upon turning on set I got flashing red power light and nothing else.
  • Removing plug for one minute and plugging in results in:
    • Audible click, steady red power light for 2 seconds then slow flashing red light
    • Pushing power button results in steady red for about 2 seconds then slow flashing red light, no other set activity
  • Removing power cord for several hours and plugging back in made no change
    • Audible click, steady red for about 2 seconds then slow flashing red light
  • Possible related note: Over past several months occasionally the entire screen would flicker momentarily and at other times be problem free for weeks.
  • Fuses F850 and F852 found blown

Repairs Made:
  • PD0074 DEF/CON Power Board
    • There are two main power supply capacitors in this set. They are C-809 and C-810. One their negative lead on the printed circuit board re-soldered leads and nearby contacts. I’m told that because the factory left out a printed circuit board eyelet, the connection will come loose over time. When I called Toshiba customer service they said there was a known solder joint problem causing blinking red light.
    • Replaced blown fuses F850 and F852.
      • I actually installed a fuse panel on the inside of the cabinet and routed the fuse connections here instead of ordering the special fuses and replacing them on the circuit board.
      • Had to use a 5 Amp SLO-BLOW for F850. Fast blow does not survive power up. Get the red blinking light.
      • Used a fast blow 2 Amp for F852.
  • PD0073 SIGNAL Board
    • Re-soldered Q751 + Q752 STK392-110 Convergence Amps
    • Re-soldered adjacent pads that looks suspicious

Total Cost to Repair about $10
  • Twelve hours of my time over three days to research issue, disassemble set, make repairs, add fuse panel.
  • Already owned Service Manual and Circuit diagrams from a different 2004 repair.
  • Less than ten dollars at Radio Shack for fuses and fuse panel. Already had wires, etc.
  • Some solder. Already owned de-soldering tools, etc.
  • Visited both local authorized Toshiba factory service repair facilities. One said repair would have to include replacing Q751 + Q752 STK392-110 Convergence Amps with ST392-180, and realigning set for a total of $500+ and it would be more if they had to order a power board. NO THANK YOU! Other shop said $65 for site visit and $30 to make an estimate that could be applied to repair.

Jan 04, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

No power running to SERVIS washing machine


Try disconnecting the heater element first and see what happens if still same unplug motor and try again, it is a process of elimination.
Plz rate solution.
Thanks.

Dec 14, 2008 | GE WPXH214A Front Load Washer

1 Answer

No Indication...Dead Unit?


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