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Safety of mother board and processor

What is the maximum allowable voltage between neutral and earth to avoid burning or failure of product

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Connect any good cabinet which involves a good power supply comprising of smps (Switching Mode Power Supply) again it also consists of four cables yellow (12v), Red cable (5v) and other two black wires of ground check the voltages with a voltmeter then you can avoid burning or failure of product .
Note : Ask your electrician to provide better earthing to your computer

Posted on Feb 19, 2008

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Posted on Jan 02, 2017

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Bike is 2003 ultra only23000mi. ecm burned out replaced it and now after about 100mi burned it out again and TSSM . when this happens headlight running lights and signal blow but now fuses


have the voltage regulator tested or replaced
bulbs blowing are an indication of over voltage and the ECM failure is also over voltage
maximum voltage allowed is 14.8 volts dc and any thing over that is deadly to 12 volt equipment
take it to an accredited motor bike electrician and have the system checked

Nov 27, 2016 | Ultra Motorcycles

1 Answer

Am/fm tuner no power


Try changing the cable/transformer for a new one. you should be able to find a new cable online easily enough, or maybe a friend has one you could borrow.

Try a different power outlet.
Make sure your multi-plug (if you're using one) is functional.
Try plunging something that you know works, in the outlet, to see if you have power at that plug.

Isolate your power supply from the mains switchboard.
Switch off and Unplug your appliance from the wall socket before attempting any repairs.
It could be a fuse in the Tuner, replace the fuse for a new one.

Get your Multi-meter and do some tests...
Test the flexible cord connections
Electrical tests included, visual inspection, Earth continuity, Polarity and Insulation resistance.

Examining cord for Damage
Disconnect flexible cord from power supply.
Check cord along the whole length for obvious damage

1: Visual Inspection
A visual test is necessary before using test instruments to ensure that all specific safety requirements are meet.
Check the general condition and safety of the cord, plug, cord anchorage, terminations and of the appliance itself.

2: Earth Continuity.
The earthing system of an electrical installation must be installed in a manner that will allow circuit protection devices to operate if there is a fault between live parts (other than Neutral) and the mass of earth.
What to check: For class (one) 1 protectively earthed appliances only, test for very low resistance between exposed appliance metalwork and the earth pin of the plug. this resistance should be as low as possible and must not exceed 1 ohm. Note: the Exposed metal parts of a class 2 double-insulated appliance must not be earthed.
Equipment requirements:
A Multimeter (Digital or analogue) Set on a ohm scale or an insulation tester that also has a continuity scale.
A set of leads.

3: Polarity
Why is this test necessary:
An incorrect connection of phase and neutral conductors to fittings and appliances is extremely dangerous and has been the cause, either directly or indirectly of many shocks and fatalities.
What to check:
Polarity tests are carried out to ensure that every single-pole switch operates in the active conductor or the circuit in which it is connected.
Equipment requirements:
A Multimeter (Digital or analogue) Set on the resistance scale when the SUPPLY is NOT connected.
or a voltage indicator set on a suitable voltage rating when the supply is not connected.

4: Insulation Resistance
Why this test is necessary:
All live conductors (including Neutrals) and live parts must be insulated to prevent - Electric shock hazards from inadvertent contact.
- Fire hazards and equipment damage from short circuits.
What to check:
Insulation resistance tests must be made between:
- Active conductors of a poly-phase circuit
- Active and Neutral
- Active and Earth
- Neutral and Earth
The insulation resistance between appropriate components shall be not less than 1 mega-ohm minimum
Equipment requirements:
An insulation resistance tester which maintains an output of 500 volts when loaded with a 1 mega-ohm resistance.
A set of leads.

Different countries adhere to spicific Electrical (safety) Regulations and standards

This information is only intended to enlighten the novice, guide and remind someone already in the field of electrical installations.
DO NOT attempt any electrical repairs unless you have the appropriate background or training.

Feb 10, 2014 | Sony Audio Players & Recorders

1 Answer

Motor will not start


Check your power cord and power supply, check the plug is clean and free from corrosion or dirt.
Plug another appliance into the same socket to check there is power at the socket.

Note: Electricity can cause serious injury even Death.
Isolate your power supply from the mains switchboard.
Switch off and Unplug your appliance from the wall socket before attempting any repairs.

If its still under warranty, take it back to the store or manufacturer for replacement.
Call a serviceman to test the appliance for you,

If not you could...
Check your fuse in the device, you will have to dismantle the appliance. Some of them have a fuse to protect the motor.

Get your Multimeter and do some tests...
Test the flexible cord connections
Electrical tests included, visual inspection, Earth continuity, Polarity and Insulation resistance.

Examining cord for Damage
Disconnect flexible cord from power supply.
Check cord along the whole length for obvious damage

1: Visual Inspection
A visual test is necessary before using test instruments to ensure that all specific safety requirements are meet.
Check the general condition and safety of the cord, plug, cord anchorage, terminations and of the appliance itself.

2: Earth Continuity.
The earthing system of an electrical installation must be installed in a manner that will allow circuit protection devices to operate if there is a fault between live parts (other than Neutral) and the mass of earth.
What to check: For class (one) 1 protectively earthed appliances only, test for very low resistance between exposed appliance metalwork and the earth pin of the plug. this resistance should be as low as possible and must not exceed 1 ohm. Note: the Exposed metal parts of a class 2 double-insulated appliance must not be earthed.
Equipment requirements:
A Multimeter (Digital or analogue) Set on a ohm scale or an insulation tester that also has a continuity scale.
A set of leads.

3: Polarity
Why is this test necessary:
An incorrect connection of phase and neutral conductors to fittings and appliances is extremely dangerous and has been the cause, either directly or indirectly of many shocks and fatalities.
What to check:
Polarity tests are carried out to ensure that every single-pole switch operates in the active conductor or the circuit in which it is connected.
Equipment requirements:
A Multimeter (Digital or analogue) Set on the resistance scale when the SUPPLY is NOT connected.
or a voltage indicator set on a suitable voltage rating when the supply is not connected.

4: Insulation Resistance
Why this test is necessary:
All live conductors (including Neutrals) and live parts must be insulated to prevent - Electric shock hazards from inadvertent contact.
- Fire hazards and equipment damage from short circuits.
What to check:
Insulation resistance tests must be made between:
- Active conductors of a poly-phase circuit
- Active and Neutral
- Active and Earth
- Neutral and Earth
The insulation resistance between appropriate components shall be not less than 1 mega-ohm minimum
Equipment requirements:
An insulation resistance tester which maintains an output of 500 volts when loaded with a 1 mega-ohm resistance.
A set of leads.

Different countries adhere to spicific Electrical (safety) Regulations and standards

This information is only intended to enlighten the novice, guide and remind someone already in the field of electrical installations.
DO NOT attempt any electrical repairs unless you have the appropriate background or training.

Feb 10, 2014 | Cuisinart DFP14 Food Processor

1 Answer

U5445-900


This is a good start, try this link...

Product Manual Search

Check your power cord and power supply, check the plug is clean and free from corrosion or dirt.
Plug another appliance into the same socket to check there is power at the socket.

Note: Electricity can cause serious injury even Death.
Isolate your power supply from the mains switchboard.
Switch off and Unplug your appliance from the wall socket before attempting any repairs.

If its still under warranty, take it back to the store or manufacturer for replacement.
Call a serviceman to test the appliance for you,

If not you could...
Check your fuse in the device, you will have to dismantle the appliance. Some of them have a fuse to protect the motor.

Get your Multimeter and do some tests...
Test the flexible cord connections
Electrical tests included, visual inspection, Earth continuity, Polarity and Insulation resistance.

Examining cord for Damage
Disconnect flexible cord from power supply.
Check cord along the whole length for obvious damage

1: Visual Inspection
A visual test is necessary before using test instruments to ensure that all specific safety requirements are meet.
Check the general condition and safety of the cord, plug, cord anchorage, terminations and of the appliance itself.

2: Earth Continuity.
The earthing system of an electrical installation must be installed in a manner that will allow circuit protection devices to operate if there is a fault between live parts (other than Neutral) and the mass of earth.
What to check: For class (one) 1 protectively earthed appliances only, test for very low resistance between exposed appliance metalwork and the earth pin of the plug. this resistance should be as low as possible and must not exceed 1 ohm. Note: the Exposed metal parts of a class 2 double-insulated appliance must not be earthed.
Equipment requirements:
A Multimeter (Digital or analogue) Set on a ohm scale or an insulation tester that also has a continuity scale.
A set of leads.

3: Polarity
Why is this test necessary:
An incorrect connection of phase and neutral conductors to fittings and appliances is extremely dangerous and has been the cause, either directly or indirectly of many shocks and fatalities.
What to check:
Polarity tests are carried out to ensure that every single-pole switch operates in the active conductor or the circuit in which it is connected.
Equipment requirements:
A Multimeter (Digital or analogue) Set on the resistance scale when the SUPPLY is NOT connected.
or a voltage indicator set on a suitable voltage rating when the supply is not connected.

4: Insulation Resistance
Why this test is necessary:
All live conductors (including Neutrals) and live parts must be insulated to prevent - Electric shock hazards from inadvertent contact.
- Fire hazards and equipment damage from short circuits.
What to check:
Insulation resistance tests must be made between:
- Active conductors of a poly-phase circuit
- Active and Neutral
- Active and Earth
- Neutral and Earth
The insulation resistance between appropriate components shall be not less than 1 mega-ohm minimum
Equipment requirements:
An insulation resistance tester which maintains an output of 500 volts when loaded with a 1 mega-ohm resistance.
A set of leads.

Different countries adhere to spicific Electrical (safety) Regulations and standards

This information is only intended to enlighten the novice, guide and remind someone already in the field of electrical installations.
DO NOT attempt any electrical repairs unless you have the appropriate background or training.

Feb 02, 2014 | Hoover U6630-900 WindTunnel Bagless...

1 Answer

Inspiron 620 desktop will not power on. Change out of power cord was done whilst under warranty (7/12-7/13). Purchased 7/13. Warranty is up. Have not tried to power on since August--it powered up then....


A computer will not power on in certain conditions follows

  • RAM Failure. i.e, RAM is not properly inserted into the port, or any dust particle presence in its port, I am sorry to say The RAM is in DEAD condition
  • Mother Board Failure. Any overflow of power enters into the motherboard. motherboard will burnout (due to lightning, Voltage level increasing etc)
  • Power Failure
  1. When the power cord is properly functioned or loose connection
  2. SMPS is under malfunctioning (SMPS Burn out)
  3. Power cords from smps to mother board,HDD,CD drive fail
  4. Short circuits etc
Check it out...

Jan 22, 2014 | Dell Inspiron 620 ST Desktop Computer...

1 Answer

My hoover vacuum does not power up


Here s a link to the manual

Product Manual Search

Check your power cord and power supply, check the plug is clean and free from corrosion or dirt.
Plug another appliance into the same socket to check there is power at the socket.

Note: Electricity can cause serious injury even Death.
Isolate your power supply from the mains switchboard.
Switch off and Unplug your appliance from the wall socket before attempting any repairs.

If its still under warranty, take it back to the store or manufacturer for replacement.
Call a serviceman to test the appliance for you,

If not you could...
Check your fuse in the device, you will have to dismantle the appliance. Some of them have a fuse to protect the motor.

Get your Multimeter and do some tests...
Test the flexible cord connections
Electrical tests included, visual inspection, Earth continuity, Polarity and Insulation resistance.

Examining cord for Damage
Disconnect flexible cord from power supply.
Check cord along the whole length for obvious damage

1: Visual Inspection
A visual test is necessary before using test instruments to ensure that all specific safety requirements are meet.
Check the general condition and safety of the cord, plug, cord anchorage, terminations and of the appliance itself.

2: Earth Continuity.
The earthing system of an electrical installation must be installed in a manner that will allow circuit protection devices to operate if there is a fault between live parts (other than Neutral) and the mass of earth.
What to check: For class (one) 1 protectively earthed appliances only, test for very low resistance between exposed appliance metalwork and the earth pin of the plug. this resistance should be as low as possible and must not exceed 1 ohm. Note: the Exposed metal parts of a class 2 double-insulated appliance must not be earthed.
Equipment requirements:
A Multimeter (Digital or analogue) Set on a ohm scale or an insulation tester that also has a continuity scale.
A set of leads.

3: Polarity
Why is this test necessary:
An incorrect connection of phase and neutral conductors to fittings and appliances is extremely dangerous and has been the cause, either directly or indirectly of many shocks and fatalities.
What to check:
Polarity tests are carried out to ensure that every single-pole switch operates in the active conductor or the circuit in which it is connected.
Equipment requirements:
A Multimeter (Digital or analogue) Set on the resistance scale when the SUPPLY is NOT connected.
or a voltage indicator set on a suitable voltage rating when the supply is not connected.

4: Insulation Resistance
Why this test is necessary:
All live conductors (including Neutrals) and live parts must be insulated to prevent - Electric shock hazards from inadvertent contact.
- Fire hazards and equipment damage from short circuits.
What to check:
Insulation resistance tests must be made between:
- Active conductors of a poly-phase circuit
- Active and Neutral
- Active and Earth
- Neutral and Earth
The insulation resistance between appropriate components shall be not less than 1 mega-ohm minimum
Equipment requirements:
An insulation resistance tester which maintains an output of 500 volts when loaded with a 1 mega-ohm resistance.
A set of leads.

Different countries adhere to spicific Electrical (safety) Regulations and standards

This information is only intended to enlighten the novice, guide and remind someone already in the field of electrical installations.
DO NOT attempt any electrical repairs unless you have the appropriate background or training.

Jan 15, 2014 | Hoover S3330 / S3332 Straight Suction...

2 Answers

Panasonic NN-A574S microwave trips power when plugged in, earth to neutral short at 134ohm with earth disconnected micorwave wil not power up, case is not live, was cooking poataoes when it failed,...


If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

Earth and neutral are tied together in your breaker box, so they should read virtually zero anyway.

The 134 ohms you're reading is probably from line (hot) to neutral and it's probably the normal resistance of the primary low voltage transformer on the control board. Unplugging the power connector to the board then measuring again would tell you that.

We have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

We're happy to help and we appreciate your thoughtful rating of our answer.

May 23, 2008 | Panasonic Microwave Ovens

1 Answer

IDE HARD DISK


Normally 137gb but updating the bios will allow a larger size to be recognised.

Oct 05, 2007 | EliteGroup P4VMM2 Motherboard

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