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Surely, after replacing the memory IC, it should be programmed to initial data values. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. http://electronicshelponline.blogspot.com/ Pull up older posts there.
If the other functions are in tune with the program without any faults then the control panel memory could be faulty or the processor sequential cycle is faulty due to a faulty IC. Check with another program , remove power from panel and try if the panel resets. If not the control panel is a suspect
Possible that the main processor section is faulty . you need to check on the +5 to the processor, check the 5 volt regulator and if possible check for the crystal OSCillator working. If you are able to check the waveforms it will confirm the processor IC.
Possible that the memory IC or the processor IC is not setting to the level that the data is set on .
The memory can fail to register if the memory IC is not responding, check the voltage to the IC.
Also if the memory seems OK the processor can be faulty as the register is not working to memorize.
Finally you can reset the programs using a auto scan and check to see if the audio come back to default settings.
Does this mean that there is no sound , if so check the speakers after disconnecting power plug. check the power amplifier output IC, voltage from the power supply, if present the IC can be faulty.
However if the sound is present then the touch pads switches can be faulty. remove clean and reset. Check the contacts, and the signals to the processor.If not replace the switches .
first check ur display cable for breakr if you have built in display disable it in bios and and if you have addon display card remove them insrert a new addon diplay card if you have display the display section in you motherboard is faulty or diplay add on card is faulty if it still dont work the clock and reset section in your motherboard is fulty to find the at the above section if you have a multimeter check the pci slot A15 means the pci pins facing the processor must have 5v if this is ok your motherboard is ok and the problem is with your display card
The loading motor drive is faulty or the mechanism is jammed. You will have to remove the top cover and check for voltage to the load motor when the open button is pressed, if voltage is present , then motor can be faulty ,jammed. remove , replace or reset.
If there is no voltage press on connectors from the motor drive IC, check voltage here, use a soldering iron to touch up .
if not the drive IC control inputt must receive signal from processor control. If yes then the drive IC can be faulty.