Question about ECS C51GM-M Motherboard

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Removed the 4-two wire plugs for the power, bootand indicator lights for switch replacement. Noticed the board is not marked to correspond with re-pluging the plugs. The MB manual does not show instll diagram. Help, please.

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  • Anonymous Nov 26, 2008

    acer C51Gm mb

    no diag or instruc for this



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Post the type and model # of your motherboard. I don't think there is any generic way to hook them up. You will need to find it in the manual. Have never seen a MB manual that does not show the pin placements.

Posted on Jan 21, 2008


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My tv is plugged in but wont turn on, there is a green flashing light (timer) how do i fix this?

hi sir good day the green light indicator flashing which indicates error detected by processor. now here is my solution on how will you fix the problem. if you are going to do it with your make sure you have proper tools and at least a basic knowledge in repairing. now unplugged the unit then open the back cover to gain access the internal part of the tv. now disconnect the connector wire going to inverter board for back light then turn the tv, if the indicator stays green doesn't blink then all the voltage out put from the power supply is normal the 5v stand by,5v switch, 12v and 24v are present, you have bad inverter board or the back light itself. another way is if you disconnect the connector wire going to inverter ballast board then still light indicator flashing and no PS_ON voltage coming from the main board which switch the power supply to turn on i may say you have bad processor board. make sure no bulging capacitors at the power supply replaced it with the same value a panasonic brand FM or FC series much better with low ESR 105c rating. you can find replacement parts at . hope this will help you feel free to ask further question good luck.

Aug 20, 2011 | Televison & Video


Whirlpool Dryer Various Test Procedures - Part 1

TEST #1 Supply Connections
This test should only be done after confirming proper voltage at the outlet.
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the back of the dryer.
3. Check that the power cord is firmly connected to the dryer’s wire harness.
4. Access the machine control electronics without disconnecting any wiring to the control board.
5. With an ohmmeter, check for continuity between the neutral (N) terminal of the plug and P8-3 (white wire) on the machine control board. If there is continuity, go to step 6. If there is no continuity, disconnect the white wire of the harness from the power cord. Test the continuity of the power cord neutral wire . If an open circuit is found,
replace the power cord. Otherwise, go to step 6.
6. In a similar way, check the continuity between the L1 terminal of the plug and P9- 2 (black wire) on the control board. If there is continuity, go to step 8. If there is no continuity, check the continuity of the power cord for power cord’s L1 wire. If an open circuit is found, replace the power cord. Otherwise, go to step 7.
7. Replace the main harness.
8. Visually check that the P5 connector is inserted all the way into the machine control electronics.
9. Visually check that the user interface assembly is properly inserted into the front console.
10. If both visual checks pass, replace the user interface assembly.
11. Plug in dryer or reconnect power.
12. Perform the Console Buttons and Indicators Diagnostic test to verify repair.
13. If indicators still do not light, the machine control electronics has failed: Unplug dryer or disconnect power.
Replace the machine control electronics. Plug in dryer or reconnect power. Perform the Console Buttons and Indicators Diagnostic test to verify repair.

TEST #2 Machine Control Power Check
This test is used to determine if power is present at the machine control electronics.
NOTE: The drum light is controlled by the machine control on all models.
1. Plug in dryer or reconnect power.
2. Open the door.If the drum light illuminates, then power is present at the machine control, and it is functional. Go to TEST #6. If the drum light fails to illuminate, do not assume the machine control electronics needs replacement. Several conditions may cause the drum light not to illuminate, including a bad bulb. If the drum light does not illuminate, go to TEST #1.

TEST #3 Drive Motor Circuit
This test will check the wiring to the motor and the motor itself. The following items are part of this motor system:
Harness/connection Belt/belt switch Drive motor Centrifugal switch Door switch Machine control electronics
1. Unplug dryer or disconnect power.
2. Access the machine control electronics and measure the resistance across P8-4 and P9-1.
If resistance across P8-4 and P9-1 is in the range of 1 to 6 ohms, replace the machine control electronics.
Otherwise, go to step 3.
3. Check the wiring and components in the path between these measurement points by referring to the appropriate wiring diagram and strip circuit in Section 7.
4. Check the belt switch and drive motor. Access the belt switch and drive motor by removing the front panel/drum assembly. Slowly remove the drum belt from the spring-loaded belt switch tension pulley, gently letting the belt pulley down.
5. Remove the white connector from the drive motor switch.
6. Check for the resistance values of the motor’s Main and Start winding coils. NOTE: Main and Start winding coils must be checked at the motor.WINDING RESISTANCE ω CONTACT POINTS OF MEASUREMENT
MAIN 1.4–2.6 Blue wire in back at pin 4 and bare copper wire on pin 5 of black drive motor switch
START 1.4–2.8 Blue wire in back at pin 4 and bare copper wire on pin 3 of black drive motor switch. If the resistance at the motor is correct, there is an open circuit between the motor and machine control electronics.
Check for failed belt switch. If the Start winding resistance is much greater than 4 ohms, replace the motor.
7. Check the belt switch by measuring resistance between the two blue wires while pushing up the belt switch tension pulley.If the resistance reading goes from infinity to a few ohms as pulley arm closes the switch, belt switch is OK. If not, replace the belt switch. If belt switch is OK and there is still an open circuit, check and repair the wiring harness.
8. Door switch problems can be uncovered in the Door Switch Diagnostic Test; however, if this was not done, the following can be done without applying power to the dryer. Connect an ohmmeter across P8-3 (neutral, white wire) and P8-4 (door, tan wire).With the door properly closed, the ohmmeter should indicate a closed circuit
(0–2 ohms). If not, replace the door switch assembly.

on Apr 11, 2009 | Whirlpool LER4634J Electric Dryer

1 Answer

I have a GE "spacesaver"

I would take a close look at the switch & take note of the following.

How does it attaches to the PC board?
How do the wires attach?
What is the physical size?

Then go to or and start switch shopping. If you look at the catalog view for the style of switch you looking for it is easier to find a replacement my visual cues, instead of part numbers.

Worse case scenario if it is simply switching the 2 attached wires, a different micro switch could be used & glued onto the existing board where the old switch has been removed.

Or.... you could simply short the 2 wires together to bypass the purpose of the switch, but the unit would always be on.

Mar 12, 2011 | Audio Players & Recorders

1 Answer

Need a replacement, where do I get one?

If I understand correctly you have a 3-speed fan.
And you need a 3-speed replacement pull-chain-type switch

Lowes carries 3 speed fan switches in the light fixture department.
These switches have multiple wires.
At any given time, there is one-and-only-one wire that connects to power from wall switch.
Lets call this the Power wire.
As you pull the chain, the power passes through the switch and goes to one-and-only-one of the other wires.
The other wires connect to windings in the motor.
The different motor windings control fan speed.

The key to replacing the switch is recording where each wire went before you disconnect old switch.
Once you know which of these wires is the Power wire, then you can test other wires with a continuity tester.
You also know the pull-chain sequence is OFF - HIGH - Medium - Low
Mark wires in fan and mark wires on old switch.
Pull out old switch.
Use regular electrical tester to find which wire in the fan is the power wire (separate wires, turn on power and test each wire to metal part of fan)
Now test the switch wires.
The switch is out of the fan.
You marked the wires so you know which wire is power wire.
Put the continuity tester on the power wire.
Test power wire to each of the other wires.
Click the switch and test to each of the other wires. Mark which wire lights up continuity tester.
Click the switch and test again. Mark which wire lights up continuity tester.
Click again, until each wire is marked in the sequence.
When you click the switch and no wire lights up, then that is the Switch OFF position.
Do the same test on the new pull-chain switch.
Connect the wires to match your testing.

Oct 25, 2010 | Westinghouse Electric Westinghouse...

1 Answer

Westinghouse Lighting 3speed Ceiling Fan Switch 7707500: I just replace the speed control switch in my Hunt...

Typically the old and new switches have no relative relationship to each other .. One way to figure this out is shut off the power and then using the black power wire attach each speed wire to it and turn power back on to observe the speed .. mark the wire with the speed 1, 2, 3, .repeat this untill all the wires are identified .. . then you can put the wires on the appropriate terminations on the new switch ..

questions ..

Please vote !

May 17, 2010 | Westinghouse Electric Westinghouse...

2 Answers

Panasonic TH42PX80U will not turn on power indicator light blinking

when the power indicator light are blinking, indicate that the TV are in protection mode.
Undo the Back and check for bad caps in the power board, or any blow fuse.
Fosg2000, Rate me please

Apr 25, 2010 | Panasonic Viera TH-42PX80U Plasma TV

1 Answer

Emachine D2880 no power clarification

your getting power to your PSU, via the green light on your mobo.
verify the PSU has a green light(most emachines do)
it sort of sounds stupid but, check the connection of the cable coming from the front of the case(the wires that connect to the mobo to the power button on the outside of the case.

if all else fails, take the pc out of the case.. put all components on a static free bag and start to rebuild your PC(without a case)
...this will rule out a short on the PC case, and faulty wiring from the case...

pretty much sounds like you've been through almost every step except replacing the PSU(you just said you tested/but your getting power to the PSU)

hope some of this helped

Sep 04, 2009 | E-Machines eMachines Desktop PC

1 Answer

Central Vac will not turn on.

These problems are nearly exclusively caused by a bad circut board and replacing it is the fix. Bad boards can cause many different effects so its nearly impossible to be sure. The 9v signal wire is not enough to short out an entire unit so it is unlikely the hose. If it is a direct connect system and you are pulling power from the 110 somehow that would cause main unit problems but that is unlikely at best. Sounds like a failed board to me.

Best of Luck

Jun 04, 2009 | Easy Flo EF1400 Central System Vacuum

1 Answer

M7DH45B2A Dehumidifier

The fall may have knocked out some wiring -- open the unit (remove back panel, then remove front by taking out screws inside) and see if any of the cables to the front panel or control board came out.

Jun 20, 2008 | Maytag M7DH45B2A Dehumidifier

1 Answer

Rainbow D4C power switch replacement

As far as I know, that switch with 6 terminals is still available. But if not, I would wire the 2 for the power head and the 2 motor wires together. Then you would have 4 leads to attach.

Jan 31, 2008 | Rainbow 75th Anniversary Canister Vacuum

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