close up of motherboard old laptop with parallel, serial , vga, ps2 port and cooler of microprocessor on white background

1284 amplifier board broken capacitor chip chipset circuit cleaning component computer cooler cpu damage device din dust electronic fix fixing hardware heat ieee laptop main memory microchip microprocessor mini motherboard mouse notebook parallel part pentium port processor ps2 ram repairing rs232 serial service sink slot socket sub support technician technology transistor vga