Reply 20 of 46, by Cga.8086
wrote:Is your board missing the Voltage Regulator? This item is shown in the photo below the two large red arrows. It has three legs a […]
wrote:...there is just a few components that mine does not have and i dont know what they are for...
Is your board missing the Voltage Regulator? This item is shown in the photo below the two large red arrows. It has three legs and is also fixed with a screw. This circuit was often left out on 486s to save cost, but it means only 5 Volt CPUs are supported, no 3,3V ones, unless you add the components yourself.
wrote:In my experience, the UMC cache chips were usually real actually. You do seem to be missing a Keyboard Controller chip.
It was always like that, very sure nobody removed anything since the case was assembled in 1995. My keyboard works fine anyways?
In mine the voltage regulator is there but belive ir ot not it does not have the screw to make it touch the PCB 😒
i checked the pcb to see any signs of mark to see if the screw was there but there are no markings.
mine is equal as yours, but no clue as os why there are 2 capacitors missing and a couple of orange components that i dont know what they are
If i remember correctly i tested it with a DX2 66mhz
as for the cache ... i got UMC chips, about 10, but its a pain in the ass to remove the fake cache because it is soldered directly without a socket.
so many legs, besides its difficult. if its difficult to replace a capacitor that has 2 legs, a "28pin x 9 " is hell