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TH-50PC77U not displaying any image, with no error codes, tried changing power board and main board "A".

Hello, My TH-50PC77U does not have turn the screen on. It was originally giving me a 10 blinks error code, which according to Panasonic, meant the main board "A" was faulty. I changed that, nothing. I placed the old board back, no more 10 LED blinks but still no image. I changed the power board, no progress. Any suggestions? Happy to get the voltmeter out and probe, but I don't know what I should be reading where. Any input would be really appreciated Thanks

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Used it yesterday, fine today. Pushed power, fine. Pushed start, why nothing?

Hello. I will take you through some basic troubleshooting. Being plugged in, display working, choices made, does the machine do anything after the start button is pressed? Examples include locking the lid, starting to fill with water, etc. Did you notice any error codes that popped up in the display? If nothing is happening after pressing start, and there aren't any error codes that have been displayed, the problem could be with the control panel. First, unplug the machine for about 5 minutes to reset the main board, then plug it back in. (You might see a spark and hear a "pop" at the outlet due to the amount of current being immediately used by the machine at idle--this is alarmingly normal!) The machine should give a short beep after being plugged in--this tells you that the main board is alive and receiving power. Try to initiate a cycle again. The circuit board for the control panel might be defective if you get the same results. Important: have you had a power outage recently--such as 3-4 weeks prior? They are NOTORIOUS for damaging boards in the electronic washers.
Part numbers:

Link to pictures of the user interface board
8564291 Google Search
Link to pictures of the main control board
W10104830 Google Search
To initiate automatic diagnostic mode, follow this procedure:
press and hold the spin button for 3 seconds, release it for 3 seconds--3 times(yes, do the 1-one thousand, 2-one thousand, 3- one thousand out loud, lol--I do!) All the lights will light up and you will see "88" on the display. If there are any stored error codes, the most recent one will be displayed--Fxx(example: F2--means there is a stuck button on the user interface board) The machine stores the last 4 error codes--keep momentarily pressing the spin button to see any stored codes until the machine displays a C0. Image 3 has the instructions. The first 2 pix show the sequence of the automatic self test and what will be in the display as each of the machine functions is initiated. See the attached pix below. For any displayed error codes, you can do web searches using your model number and the error code to find out what the meaning is. Let me know what you find--to exit the diagnostic mode, simply press the power button. I hope this helps you!





Front loader maytag stop in middle cycle give error F25

Remove your service panel and look for your tech sheet inside a jacket in the inside of the service panel. An F-25 is usually a broken wire between the main control and the motor control.

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I have a Panasonic Viera TH-PZ4285U and when i turned on 2 blinking lights appear on the power light, no image, somebody told me to change the power supply board, and also i don't know if is an A or D...

Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. If blinks continue without any pause, the main board is faulty. Search the site by type in the "brand name" to your device, [Exclude the model number] in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

What does error code e90 mean

Error code 90 means it could be a communication error between the main interface and the main P.C.B. (PROGRAMMER).E90 can cover a few faults it could mean that the main board is damaged.have you had any power failures recently.If you are confident to have a look at the fault make sure that the main power is off. Remove the top lid there are 2 screws at the rear of the underside of the lid then check all the connections on the main board and the display board if possible remove any plugs you can get to easily and replace because it may just be a bad connection.Try this and then power up the machine and just try it on spin if no error codes come up then try it again.If this is not successful it would be too costly to repair.

I have Canon IR-C5185i. Just assembled out of the box. Powered on. Message displays with error E0000732-8888 and I am instructed to ''turn switch off and on''. What could be wrong?

When this machine was started after connecting the Color Image Reader-E1/F1, the screen for the shutdown sequence appeared (and E732-9999 was recorded as an error history in service mode). When the main power switch was turned OFF/ON by following the instruction on the screen, the error code "E732-8888" was displayed. When connecting the Color Image Reader-E1/F1, follow the field remedy below.
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1. Connect the Color Image Reader to this machine. (Do not connect the DDI cable).
2. Turn ON the main power switch.
3. Change the setting values of the following service mode items.
- Service mode > COPIER > Option > BODY > W/SCNR: from '0' to '1'.
- Service mode > COPIER > Option > BODY > SCANTYPE: from '1' to '0'.
Reference: For the Color Image Reader-E1/F1, this mode has to be set to '0'. On the other hand, it has to be set to '1' for the Duplex Color Image Reader-G1.
- Color Image Reader-E1: Platen cover model
- Duplex Color Image Reader-F1: Two-sided reversal reading type ADF model (DADF-M1)
- Duplex Color Image Reader-G1: Two-sided simultaneous reading type ADF model (DADF-T1: only for the iRC5180)
4. Turn OFF the main power switch, and connect the DDI cable.
5. Turn the main power switch ON.
Note: How to turn OFF the main power switch.
When turning off the main power switch, be sure to follow the steps below to protect the HDD inside this machine.
1. Hold down the control panel switch for 3 sec or more.
2. Following the instruction displayed on the shutdown screen, operate the control panel. (The main power switch is turned OFF automatically.)
3. If there is a need to unplug the power cord (from the wall outlet), perform step1 and 2 above before unplugging it.

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