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Dynapro torpedo style 65000 bts was ruining good...then just quit...not led power lite on acts like its not receiving ac . whats defective on board? fuse good.diodes good whats S/k1 mean on pcb..

Posted by Tyrone Russell on

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Anonymous

  • 202 Answers

SOURCE: no power in dell e173fpf

I would expect the same (new) part failed. Try another dual diode otherwise you may be chasing the problem around the board.. Good Luck, Tim

Posted on Feb 21, 2007

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Anonymous

  • 67 Answers

SOURCE: Neff combi blown diode.

If the diode failed by opening, there may be no other damage. If the dioded failed by shorting, the alternating current may have damaged other components. Ohm it out. You can get diodes from digikey.com, mouser.com, or radio shack or any electronics or appliance supply. If the diode is charred and you can't get the part number, the oven rating can be used to select a replacement. Since the fuse was 10 amps, the diode should also handle at least 10 amps. If you can power the unit and read the voltage at the diode input this will give you the power (volts times amps). It's always worth trying as it's cheaper than replacing the unit.

Posted on Nov 30, 2007

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Anonymous

  • 1 Answer

SOURCE: rt2280 no power up, no display, standby light works

Might be the relay on the power board that stands up just behind the big transformer. I has a complete no power also, I shorted out the relay legs on the black one, it started to work again. I will probably replace it, since the problem started by the system shutting off randomly.

Posted on Nov 29, 2008

budmrtn

Bud Martin

  • 11361 Answers

SOURCE: Hello!Sony SDM-HS73 power-inverter problem

At this point you may have bad transformers, bad tuning cap, you need to check the frequency of the inverter oscillator to see if both of them are running at the same frequency, the bad one may not be. The Inverter/power supply is not made by SONY, Powernet makes the board. Please see what went wrong with the one I fixed.
http://s807.photobucket.com/albums/yy352/budm/Sony%20SDM-HS73/
One thing to keep in mind, when the board turn into carbon (blacken), it will conduct. The circuits operate at high voltage and high frequency.

Posted on Apr 09, 2010

Anonymous

  • 1 Answer

SOURCE: alarm led on samsung pcb model #lj44-00025a

I had a similar problem with my 42" set, a re-badged SAMPO unit bought during 2002 in the UK. It was working one day and when turned back on the next day there was no picture. The clicking noises that occur when the set is switch on happened but not in the usual pattern. The symptoms were the same as a fault it had approximately 10 months after I bought it, although it was then repaired under warranty by swapping out the PSU.
I took the back off the set and confirmed it had the LJ44-00025A PSU board. When first plugged in the green LEDs on the PSU would light and the relays would click. There would then be a short buzzing noise, the relays would click and the green LEDs would go out. The red "Alarm" LED would then light.
After reading posts on a number of forums pointing to the PSU being at fault, I ordered a replacement PSU from ADC in the US ($139.00 + shipping) but that did not fix the problem. After downloading the service manual I then followed the instructions to check and set the PSU voltages, during the time that the three green LEDs were lit. I found that the VA value was zero and the others were a lot lower than they should have been. The service manual shows that the voltage tests are carried out with most of the sub-boards connected, except the Image Board and front panel switches. I then disconnected each connector in turn from the PSU and found that when the connector for the Logic F-Buffer board (LJ92-00601A) was disconnected the PSU would not alarm when powered up and the five voltages were close to normal. I found a replacement 2nd hand F-Buffer board on fleabay for about £17.00 and once fitted I re-tested and set the five voltage levels for the PSU. The TV is now working as well as it ever has. I have since tested the original PSU and confirmed that it also works, although the voltage levels needed adjusting. I hope this helps.

Posted on Jul 06, 2010

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My Samsung LED 46" tv (UN46D6050TFXZA) won't turn on. The standby led blink twice 5 time in each cycle. all the capacitors on power board look normal.

In most of the case the problem is defective LED strips inside of the panel, please try this:

1. Unplug the cable between the main board & the power supply, apply the AC power to the power supply, if the back lights came on, the problem is defective main board.
2. if the back light do not come on, the problem in most of the case is the defective LED strips, you may get a new power supply module to test it again to make sure that the problem is not the power supply.
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What is the fipa card in nokia BTS

Transmission between BTS and BSC.FIFA card contain only TNC male connector.
FIFA :
fifa is a transmission module,receives DC power from BTS through its backplane connectors; power consumption of a fully equipped FIFA is less than 76 w.

if flexbus is connected to another indoor unit, Flexbus power feed should be turned off

power feed is controlled with flexi hub manager
power feed is also indicated by the flexbus LED on the FIFA front panel
power feed is short circuit protected

FIPA :

8 * E1 / T1 interfaces balanced 120/100 ohm
1* RJ 48 connector per IF

its a wire line transmission module
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Starts to fill then basically powers off

One style of this washer has a small board on it called an auto temp sensing board. I wonder if that might be your problem. Sounds to me like it is intermittent from your question and that leads me to believe the board has corrosion on the contacts maybe?

Service Manual

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

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I have a dynapro 65000 that will turn on the has stop lighting

took mine apart and all the hoses are dry rotted. Going to replace them and see if that takes care of it. Sure wont hurt...
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3 beep sound

If a PC suddenly fails to boot properly, you should perform a hard reset as the first action. Performing the hard reset will correct many problems. If the computer still does not start properly, select your symptom from the list below to guide you to the recommended corrective actions.
  1. Disconnect all peripheral devices and remove all USB devices and SD media cards. You want to test the computer not the accessories!
  2. Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds to drain all residual power and restore default startup settings.
  3. Reconnect the AC power adapter (but do not insert the battery), Press the Power button, Look for glowing LEDs near caps lock and num lock keys, and Listen for sounds of a fan or other moving parts turning.
  4. If the computer does not start, the LED lights do not glow, and the display is black, you can perform one or more of the following actions to resolve the no power issue.
    • Verify the computer is receiving power from the AC adapter . Verify that the AC adapter is not damaged and is connected correctly to a working wall outlet plug. Verify AC power is connected to the system board by examining the AC adapter, wiring, and pin connection for damage. The keyboard LEDs will glow when AC power is connected to the system board. Damaged components, like the AC adapter or the pin in the power connector, may require an HP-certified repair.
    • Use a different AC power adapter . If you have access to a different AC adapter or power pack that is designed for the computer, connect it to the notebook and try to start the computer. If you own or have access to more than one notebook, verify that you are using the adapter which belongs to the notebook. CAUTION: Using a power adapter that does not meet the power requirements or has the wrong type of connector may damage the computer. On newer notebook models, connecting the wrong adapter to the notebook may cause the power LED lights to blink but not power the computer.
    • Remove the battery and boot on AC power only . A discharged or defective battery may prevent the AC adapter from supplying enough power to start the computer. To verify that power from the AC adapter is available for PC; remove the battery, connect AC power adapter, and press power button. If available, try using a different AC adapter, that is rated for the PC, and repeat this test.
    • Remove the AC adapter and boot on battery power only . A defective AC adapter may not charge the battery and prevent the computer from booting on battery power only. To verify battery power available for the PC; connect AC power adapter, allow battery to charge for 30 minutes or more, disconnect the power adapter and press power button. If available, try using a fully charged battery, of the same type, from another computer and repeat this test.
      • If LEDS do not glow and the fan or hard drive do not spin, battery may need to be replaced.
      • If tests of both the battery and the AC adapter fail, there may be a problem with system board requiring service by HP.
      • If LEDs glow and PC boots, the AC adapter may need to be replaced.
      • If LEDs glow, but PC does not boot go to LEDs glow, fan is heard, but display is black or blank section.
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I have a sharp 37" lcd tv,model # lc37sb24u. no pix or sound, power lite comes on about 10 seconds then power and opc lites alternate on and off. thanks RON

This problems very common in Sharp LCD tvs.The Tuner signal board have problems,every times the power LED,OPC LED lites up,just push the power button on again,wait see if the LCD backlight lite up and works,not the Power lite and the OPC lite LEDS flashes again.You,just have to push the power button again,sometimes u have to push the power button at least 6 or 7 times to get the Power LED stable,and then LCD backlight,come on than the tv work.Not sure,but if the Power and OPC lites keep flashing,after u pushes the power button at lest 10 or 12 times,and the LCD backlight dosen't come on and the tv don't work.I think,it time to change the Tuner board is completely dead.I have a Sharp LCD tv, I do this everytimes pushing the power button at least 3 or 4 than the power LED stable,and the LCD backlight come on than the tv work.Not a plaw in the power supply like those capacitors in many LCD models tvs,but some included Sharp Tvs is the Tuner signal board is not very good in design,use the tv awhile the Tuner signal board have problems recieving the power to it Tuner board components.
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Viewsonic VX1935wm. Power lite does not come on. Replaced 4 bulging caps on the power supply board but it still does not come on. (No power-on LED).Power supply voltage is good. Any ideas as to what to...

Check the controller board, the controller board is fed by 5vdc then it is down converted by switching regulator circuits to 3.3v for the processor. look for those voltages on the controller board, 3.3v should also be on the switches assembly. I f you do have all these voltages then the probelem can be the controller board was damaged when the filter caps went out and the power supply was putting out AC instead of Dc due to no filtering of AC by the filter caps.
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