Greetings everyone.
I've got a DK TKG4-11 2-board stack that will not boot past the initial 'whaaahh' power-up sound. In fact, it is stuck in what appears to be a loop as that power-up sound just repeats over and over again.
I inspected the board and found two busted ceramic caps, located at:
I'm not sure if them being busted are the main cause of my current issue, but I doubt they are helping matters at all, so I figured it best to fix all physically apparent issues and then re-test.
I know the 103Z caps (per the manual) are .01uf 50V caps with a -20 to +80% tolerance.
What I'm curious about is the number on the bottom of the 103Z marking. I see the following different caps all over the board...
The main reason I ask is that the ceramic casing on the blown caps in question is damaged to the point that I cannot tell what their bottom/last character values were, so I'm left to guess.
My second question is about three 221K ceramic jumpers installed on the following video board IC's... are they supposed to be there? I don't recall seeing them on any other TKG4 board sets that I've looked at (which isn't a lot at this point, honestly).
Video 3K (221K ceramic capacitor)
Video 4K (221K ceramic capacitor)
Video 4A (221K ceramic capacitor)
Thank you!
I've got a DK TKG4-11 2-board stack that will not boot past the initial 'whaaahh' power-up sound. In fact, it is stuck in what appears to be a loop as that power-up sound just repeats over and over again.
I inspected the board and found two busted ceramic caps, located at:
- Video C139
- CPU C149
I'm not sure if them being busted are the main cause of my current issue, but I doubt they are helping matters at all, so I figured it best to fix all physically apparent issues and then re-test.
I know the 103Z caps (per the manual) are .01uf 50V caps with a -20 to +80% tolerance.
What I'm curious about is the number on the bottom of the 103Z marking. I see the following different caps all over the board...
- 103Z-10
- 103Z-17
- 103Z-1N
- 103Z-1D
- 103Z-18
The main reason I ask is that the ceramic casing on the blown caps in question is damaged to the point that I cannot tell what their bottom/last character values were, so I'm left to guess.
My second question is about three 221K ceramic jumpers installed on the following video board IC's... are they supposed to be there? I don't recall seeing them on any other TKG4 board sets that I've looked at (which isn't a lot at this point, honestly).
Video 3K (221K ceramic capacitor)
Video 4K (221K ceramic capacitor)
Video 4A (221K ceramic capacitor)
Thank you!
