Question about Dell Dimension 4700 PC Desktop

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NO DIAGNOSTIC LEDS LIGHT UP - Dell Dimension 4700 PC Desktop

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This problem has repeatedly been reported with this model and the 4800. People will tell you it's the power supply, motherboard and CPU. It is none of those. Your CPU cooling tower has been jarred loose. Dell made these things way too big, and as a result a simple bump to your case can make everything go crazy. Remove your fan shroud, then the fan then the cooling tower, cleaning each as you go.
Now remove the large cooling tower. Remove, clean and reseat your CPU, add NEW thermal paste and reassemble everything and keep the PC on it's side. The system should now be able to reboot. In extreme cases of jarring such as the PC has been dropped etc, your motherboard may have been damaged. In this situation it is best to buy a new motherboard and transfer all your components to the new board. So far, I haven't had to do this though. Most of these PC's come back to life easily with the steps I just mentioned above.

Posted on Aug 30, 2010

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Posted on Jan 02, 2017

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Have Error Code E20 - won't drain. How do I approach?



The diagnostic test is used to check individual component function only. TO START THE TEST: • Turn the Program Knob to the start position, Spin Only. • Press Start/Pause to start the cycle and save it. • Press Cancel to stop the cycle and turn off the LEDs. • Press Cancel again to turn on the LEDs. • Within 5 seconds, press and hold the Options and Start/Pause buttons until LEDs start sequentially chasing, then release buttons. 1. All the LEDs will sequentially light. Pressing a button below a light cluster will light all the LEDs in that cluster at one time to confirm functionality. 2. Turn the program knob (1) click clockwise from the start position. The hot water solenoid will activate and hot water should enter through the detergent compartment. 3. Turn the program knob (2) clicks from the start position. The bleach water solenoid will activate and cold water should enter through the bleach compartment. 4. Turn the program knob (3) clicks from the start position. The bleach and the wash water solenoids will activate and cold water should enter through the softener compartment. 5. Turn the program knob (4) clicks from the start position. The door lock solenoid will deactivate and the loading door can be opened.When the door is opened, the drum light should turn on. 6. Turn the program knob (5) clicks from the start position. The washer will fill and tumble. Once tumbling has started, the Boost Heater (if so equipped) will turn on. 7. Turn the program knob (6) clicks from the start position. The drain pump & door lock solenoid will activate and the washer will operate in high spin. 8. Turn the program knob (7) clicks from the start position. The control will signal the last error code. Exiting Diagnostic Mode There are two options for exiting theDiagnosticTestmode and returning the washer to normal operation: a) Unplug the power cord, wait 5-8 seconds, then reconnect the power cord OR b) Turn the program knob clockwise 2 or 3 clicks after the start position. Press Options and Start/Pause buttons together for a few seconds until wash cycle LEDs appear.

Dec 26, 2010 | Frigidaire Affinity ATF7000E Front Load...

1 Answer

Will not spin


Some of the Wash Progress LEDs flash when the machine stops due to a fault. The 8 Wash Progress LEDs stands for the binary digits and by indicating the digits, the fault code number is determined. The fault code can be shown by activating Diagnostic Mode if none of the Wash Progress LEDs are lit.

Turn machine OFF on the control panel then hold down the Water Temp Down button and press the POWER button until the machine gives 2 short beeps and lights up. Release buttons and you are in Diagnostic mode. Press the Spin Speed Up button 3 times until the Hold and Slow LEDs are lit. Write down the LEDs which are lit across the Wash Progress LEDs and post it back.

You don't have to accept or reject and rate this post to add information or post comments and follow-up questions should you need further assistance. But accepting the solution does not stop you from communicating with the expert. You may continue communicating with the expert as long as you need assistance regarding your concern stated herein.

Sep 07, 2010 | Fisher and Paykel GWL11 Top Load Washer

1 Answer

L have dell optiplex 520 and 330 computer and it now giving me amber light and how can l solve the promblem


See Diagnostic Lights, and Diagnostic Leds, on this page:
support.dell.com/support/edocs/systems/opgx520/en/ug/tools00.htm?dgc=CJ&cid=24471&lid=566643&acd=10550055-3312504-#wp1114558

computer has four lights labeled "1," "2," "3," and "4"on thefront or back panel. The lights can be off or green. When the computerstarts normally, the patterns or codes on the lights change as the bootprocess completes. When the computer starts normally, the patterns orcodes on the lights change as the boot process completes. If the POSTportion of system boot completes successfully, all four lights displaysolid green. If the computer malfunctions during the POST process, thepattern displayed on the LEDs may help identify where in the processthe computer halted

Jan 15, 2010 | Dell OptiPlex GX520 PC Desktop

2 Answers

Getting orange flash light instead of green stable light on my dell optplex 520 and 745 what should to solve the problem


replace the power supply with a known good one. If that doesn't solve the problem then the motherboard is bad and would need to be replaced.

Jan 15, 2010 | Dell OptiPlex 520 PC Desktop

1 Answer

PowerMac G5 with dual 2.7 processors powers on but no video


There are seven diagnostic LEDs near the memory banks of this model: six in a tight line between the edge of the logic board and DIMM bank 1, and the seventh just underneath DIMM bank 1 and slightly more inboard. Please tell me which of these LEDs are on and I will tell you what they mean.

Sep 25, 2009 | Apple Power Mac G5 Desktop

1 Answer

I have connected Lantronix UDS1100 Device with Siemens AZL Meters. But not able to get complete data on front end.


The UDS has the following LEDs, which help you diagnose problems.
Power LED (green)
Ethernet 10/100 Link (yellow = 10 Mb/green = 100 Mb)
Ethernet Half/Full Duplex Activity (yellow = Half Duplex/green = Full Duplex)
Diagnostic (red)
Status (green)
Simultaneously lit Diagnostic (red) and Status (green) LEDs mean something is
wrong. If the Diagnostic LED is lit or blinking, count the number of times the Status
LED blinks between its pauses. The following table explains the LED functions:

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2 Answers

Dell 8400 steady amber light, no diagnostic LEDs, high turbo fan


you will need to change your processor is like it is bad.

Apr 04, 2009 | Dell Dimension 8400 PC Desktop

1 Answer

Motor control board frigidaire


E59 No tacho signal for 3 seconds in other words sounds like a bad motor
Diagnostic Test:
The diagnostic test is performed by using the Program Knob. To START THE TEST:
? On non-digital display models, turn the Program Knob to start position, Drain/Spin.
? On digital display models, turn the Program Knob to start position, Touch Up. (NOTE: If the model has a timer dial that can be rotated 360?, turn the Program Knob to start position, Drain/Spin.
? Press Pause Cancel to turn off LEDs.
? Within 5 seconds, press and hold the Option and Pause Cancel buttons until LEDs start sequentially chasing, then release buttons.
1. All the LEDs will sequentially light. Pressing a button below a light cluster will light all the LEDs in that cluster at one time to confirm functionality.
2. Turn the program knob (1) click clockwise from the start position. The hot water solenoid will activate and hot water should enter through the detergent compartment.
3. Turn the program knob (2) clicks from the start position. The bleach water solenoid will activate and cold water should enter through the bleach compartment.
4. Turn the program knob (3) clicks from the start position. The bleach and the wash water solenoids will activate and cold water should enter through the softener compartment.
5. Turn the program knob (4) clicks from the start position. The door lock solenoid will activate.
6. Turn the program knob (5) clicks from the start position. The door lock solenoid will deactivate and the loading door can be opened.
7. Turn the program knob (6) clicks from the start position. The washer will fill and tumble.
8. Turn the program knob (7) clicks from the start position. The washer will fill and spin (leakage test).
9. Turn the program knob (8) clicks from the start position. The drain pump and door lock solenoid will activate and the washer will operate in high spin. SAFETY WARNING: If power is removed during this test, the door can be opened. To prevent injury, DO NOT put your hands inside when the tub is rotating.
10. Turn the program knob (9) clicks from the start position. The control will signal the last error code.
Exiting Diagnostic Mode
There are two options for exiting the Diagnostic Test mode and returning the washer to normal operation:
a) Unplug the power cord, wait 5-8 seconds, then reconnect the power cord OR
b) Turn the program knob clockwise 2 or 3 clicks after the Start Position. Press Options and Pause Cancel buttons together for a few seconds until wash cycle LEDs appear. If a situation arises where you cannot exit the Diagnostic mode as described above and the bank of 5 LED?s on the right end remain ON regardless of Program Knob position, a combination of pushed buttons may have caused the control to enter a special factory test mode. Disconnect power to reset the control to return washer to normal operation is this occurs.
To clear latest stored error code:
Place the control into Diagnostic test Mode.
? Turn the program knob clockwise 9 clicks from the Start Position. The control will signal the last error code.
? Press and hold the Options and Pause Cancel buttons for 3 seconds. The code will be cleared.
? Exit Diagnostic Mode to return the washer to normal operation.
E59 No tacho signal for 3 seconds

Dec 30, 2008 | Frigidaire ATF6000ES Front Load Washer

1 Answer

How do I run a diagnostic on a Fridgidaire


Diagnostic Test: The diagnostic test is performed by using the Program Knob. To START THE TEST: • On non-digital display models, turn the Program Knob to start position, Drain/Spin. • On digital display models, turn the Program Knob to start position, Touch Up. (NOTE: If the model has a timer dial that can be rotated 360°, turn the Program Knob to start position, Drain/Spin. • Press Pause Cancel to turn off LEDs. • Within 5 seconds, press and hold the Option and Pause Cancel buttons until LEDs start sequentially chasing, then release buttons. 1. All the LEDs will sequentially light. Pressing a button below a light cluster will light all the LEDs in that cluster at one time to confirm functionality. 2. Turn the program knob (1) click clockwise from the start position. The hot water solenoid will activate and hot water should enter through the detergent compartment. 3. Turn the program knob (2) clicks from the start position. The bleach water solenoid will activate and cold water should enter through the bleach compartment. 4. Turn the program knob (3) clicks from the start position. The bleach and the wash water solenoids will activate and cold water should enter through the softener compartment. 5. Turn the program knob (4) clicks from the start position. The door lock solenoid will activate. 6. Turn the program knob (5) clicks from the start position. The door lock solenoid will deactivate and the loading door can be opened. 7. Turn the program knob (6) clicks from the start position. The washer will fill and tumble. 8. Turn the program knob (7) clicks from the start position. The washer will fill and spin (leakage test). 9. Turn the program knob (8) clicks from the start position. The drain pump and door lock solenoid will activate and the washer will operate in high spin. SAFETY WARNING: If power is removed during this test, the door can be opened. To prevent injury, DO NOT put your hands inside when the tub is rotating. 10. Turn the program knob (9) clicks from the start position. The control will signal the last error code. Exiting Diagnostic Mode There are two options for exiting the Diagnostic Test mode and returning the washer to normal operation: a) Unplug the power cord, wait 5-8 seconds, then reconnect the power cord OR b) Turn the program knob clockwise 2 or 3 clicks after the Start Position. Press Options and Pause Cancel buttons together for a few seconds until wash cycle LEDs appear. If a situation arises where you cannot exit the Diagnostic mode as described above and the bank of 5 LED’s on the right end remain ON regardless of Program Knob position, a combination of pushed buttons may have caused the control to enter a special factory test mode. Disconnect power to reset the control to return washer to normal operation is this occurs. To clear latest stored error code: Place the control into Diagnostic test Mode. • Turn the program knob clockwise 9 clicks from the Start Position. The control will signal the last error code. • Press and hold the Options and Pause Cancel buttons for 3 seconds. The code will be cleared. • Exit Diagnostic Mode to return th e w a s h e r t o n o r m a l o p e r a t i o n . 

Dec 24, 2008 | Frigidaire ATF6000ES Front Load Washer

2 Answers

Cancel Light Flashing on Kitchen Aid Dishwasher


I ran into this same problem. Cutting the power didnt reset it.

After power reset, mine had the normal led blinking. If I pressed cancel, then the cancel and china button leds would start blinking too.

I pulled out the trouble shooting guide (from behind the baseboard kick panel under the dishwasher door). It that if the dishwasher wont run and button LEDs are blinking there is a short circuit in the keypad. It gave a keypad diagnostic sequence which I followed. (disconnect keypad and try to initiate the diagnostic cycle without the keypad by disconecting the yellow leads to OWI sensor twice in less than 6 seconds.

I could hear the diagnostic cycle start, so the problem is a bad keypad. Will order a new one tomorrow and let you know if it works.

Sep 01, 2008 | KitchenAid 24 in. KUDI01FLSS Stainless...

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