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Water damage to laptop

Thanks for the solution! Let's say that it has shorted the power supply, what should I do next? Do I need to replace the a/c adapter?
The green light is still on the adapter but i'm not sure if this means its still working... please advise... thanks..

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Best solution on the power supply, if you can or find some one that can put a multimeter on the power supply and see if the correct voltage is correct. If no voltage, bad adapter or wire is broke...

Posted on Aug 13, 2008

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6ya6ya
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Posted on Jan 02, 2017

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H42PZ70B4 red light flashes


Unfortunatly, a 7 blink error can mean all kinds of things. If you are handy with a DVM then you should be able to diagnose the problem. Odds are, you either have a bad SC board, a bad SU or SD board, or in worse case scenario . . . a bad panel.

Unplug the unit and take the back off the unit.

Start with the power supply and disconnect the top two cables. They go to boards on each side of the power board.
Take your DVM and measure resistance on pin 1 of both connectors to chassi ground. If either are shorted, then your power supply is damaged. If checks ok, then move to next step.
Measure resistance on the same cable, except this time on the SC board side. Make sure cable is still disconneted. If there is a short, then your SC board needs replaced. If not, move on to next step.
Disconnect the SC board from the set. The two little boards that are left on the side need resistance checks. If bad - replace. If ok . . .well your panel is bad. I hope this helps.

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In asus P5GL-MX mother board the power supply regulator ic 2 piece has been damaged (short) how would i know plz help me


Hi if the regulator ic has been damaged in your power supply even you replace that there are some electronic component where also damage because the ic will not damage where there is no over voltage flow on it. This means there are some resistor or a transistor is also shorted it advisable to replace a new one than to repair your power supply. Because even you repaired it the performance and the life span of your power supply is not stable. So it better to replace a new one.

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Spilled coffee on D600 notebook, power supply turns off when plugged in after had the notebook cleaned. is my notebook not fixable?


When the power supply turns off when plugged into the laptop it is indicating that there is a short. Remove your battery and try connecting the power adapter again. If the problem persists your motherboard will most likely need to be replaced.
There are companies out there that will repair motherboards however if the laptop was on when the spill occurred there is little to know chance that the motherboard is repairable.

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HP Compaq NX9420 Laptop Power supply shorted out replaced new Power supply purchased but Laptop will not power up suspect mother board shorted out also. Any suggestions


The DC Jack Will Need To Be Visibly Inspected, and Tested ..
Most Likely Need To Replace The DC Jack (the port where your AC Adapter Plug Plugs into.....

Though, if you experienced a power surge/dip or similar, You could have shorted out the motherboard....

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No power


Hello,

Please replace the shorted components to ensure and avoid the damage of the device.

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Need to know "no bus" indicator light on instrument panel....


"No Bus" means the data cable going to the (PCM) computer is unplugged, or the PCM has failed and not able to read the information it is being given.
Sometimes just jiggling the PCM causes the ODO "NO BUS" to come on.
Sometimes a bad crank or cam sensor can cause this as well.

Here is the OFFICIAL checklist for the "NO BUS" condition....

Vehicle: 1998 - 1999 Dodge Durango 3.9L
2000 - 2001 Dodge Durango 4.7L
1998 - 2000 Dodge Durango 5.2L
1998 - 2001 Dodge Durango 5.9L



Symptom: Engine will not start. Gauges are inoperative. No BUS message displayed on odometer.



System: Body/Chassis Electrical, Emissions/PCM/Fuel, Engine Electrical



Codes: N/A



Problem 1 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Crankshaft Position (CKP) Sensor.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) sensor. If 5v is not present, unplug the Crankshaft Position (CKP) Sensor. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, replace the CKP sensor.



Problem 2 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Camshaft Position (CMP) Sensor.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the Camshaft Position (CMP) Sensor. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, replace the CMP sensor.



Problem 3 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Manifold Absolute Pressure (MAP) Sensor.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire (5v power supply) at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the MAP sensor. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, replace the MAP sensor.



Problem 4 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Throttle Position Sensor (TPS).



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire (5 volt power supply) at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the TPS. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, replace the TPS.



Problem 5 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted wire.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the throttle position sensor (TPS) or manifold absolute pressure (MAP) sensor. If 5v is not present, unplug all sensors that are connected to the 5v power supply and disconnect the PCM. Check if either 5v power supply circuit is shorted to ground using a DVOM. If the circuit is found to be shorted to ground, repair the wire and the cause of the short.



Problem 6 of 6: The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Governor Pressure Sensor.



Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the large round connector on the driver's side of the transmission. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, remove the transmission pan and check for shorted wiring inside the transmission. If the wiring is OK, replace the Governor Pressure Sensor.


Many times the PCM simply overheats - and changing it will stop the problem.


Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

May 13, 2009 | 1999 Dodge Durango

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All the modules are connected together to communicate with each other via the PCI bus. It is possible that one of the modules is pulling the bus down. If the vehicle won't start it could be any one of the modules. It will be a process of elimination to find the faulty one by disconnecting them one at a time.

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You are describing a classic wiring short circuit. Either the cables of your power supply or the jack on the laptop itself are damaged and need to be repaired or replaced as soon as possible to avoid permanent damage. There is no logical reason it would work only in certain outlets, that is probably just coincidental to the way you have the cable running while plugged in to each outlet.

Your power supply has two cables, the side leading to the AC outlet is removeable and easily replaced but the side leading to the laptop's jack is not. Start with the AC plug. Leaving everything from the 'brick' to the laptop in a stable position, gently flex the AC cable until you see evidence of the short (usually a break in the wire, possibly chewed by the dog or snagged on the edge of a desk). If so, replace the AC wire. If not, try the same with the laptop side of the brick. If so you usually should replace the entire power supply unless you are real handy with a soldering iron.

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