I'm trying to make a list for NA1, unfortunately I don't have my board yet and it has all capacitor replaced by radial one (for that reason I'll need a recap).so ... i measure the NA1 motherboard capacitors :
C43 is 470uf 10V lead space 5mm , dia 6mm , 10mm length (electrolytic capacitor)
C41 is 100uf 16V lead space 5mm , dia 4mm , 10mm length (electrolytic capacitor)
C33 is 220uf 6.3V lead space 5mm , dia 4mm , 10mm length (electrolytic capacitor)
C30 is 1000uf 16V lead space 5mm ,dia 11mm , 20mm length (electrolytic capacitor)
C6 is 100uf 16V lead space 5mm , dia 4mm , 10mm length(electrolytic capacitor)
all of these are rated on 85°C , but will work 105°C too
Now the hard part will be to put here the values and measure of that smd electrolytic caps
If somebody know how to interpretate value and can measure these smd electrolytic caps will be awesome
also in February , this year , i've made a comment about reccap this NA1 pcb , but will be fine to make this reccap proper list togheter , but after these notes they are :
100uF / 6.3v - C8, C9, C10, C15, C16, C24, C25, C27 - dia 5mm , 5mm length
47uF / 16v - C39 - dia 5mm , 5mm length
22uF / 6.3v - C11, C14, C31, C32 - dia 3mm , 4mm length
2.2uF / 35v - C5, C23, C26, C28, C29, C38, C40 - dia 2mm , 4mm length
(these are my measurements - i've made it with a rulette , but if you have a caliper and can measure them proper , will be aweome)
For large image : Here
2.2UF
thank you for your corrections, I'll double check the list and my PCB. The only difference that I immediately notice is that you have 171-5874 ROM board for all your games and I have a 171-5987 so it may differ, in that case I'll add both modelsFirst thanks to @sk8er000 for initiating this thread which is very helpful.
I double checked the system18 cap list against 3 boards I have (Alien Storm, Moonwalker and Shadow Dancer) as I plan to capkit them and found some things that do not match the list in the google sheet:
All 3 rom boards have 470uf 16V capacitors for C5, C6, C7, C8 with 5mm lead-spacing. The quantity table should list five 100uf 16V caps instead of nine and four more 470uf 16V caps.
I think there's a typo for C49 which is 1uf 50V cap (not 16V), the total for this cap value in the quantity table is right though.
On the 3 main boards C145 was a 47uf 16V cap (minor as it's ok to have 25V listed on the google sheet)
Also it looks like there are 2 different revisions of the main board (I attached some pictures of the 3 boards): on the revision which was used for the cap-list there's an MCU, 3 xtals and a CN9 port while on the other revision there are only 2 xtals and no MCU / CN9 port. The difference for the cap-list is that there's no C132 but a C2 instead (with the same specs) which is located next to the CPU.
yes buddy , we have that motherboard with 3 crystals and the rom board who uses the 4 x 100uf 16v. and 22 roms locations vs 470uf 16v with 20 roms locationsthank you for your corrections, I'll double check the list and my PCB. The only difference that I immediately notice is that you have 171-5874 ROM board for all your games and I have a 171-5987 so it may differ, in that case I'll add both modelsFirst thanks to @sk8er000 for initiating this thread which is very helpful.
I double checked the system18 cap list against 3 boards I have (Alien Storm, Moonwalker and Shadow Dancer) as I plan to capkit them and found some things that do not match the list in the google sheet:
All 3 rom boards have 470uf 16V capacitors for C5, C6, C7, C8 with 5mm lead-spacing. The quantity table should list five 100uf 16V caps instead of nine and four more 470uf 16V caps.
I think there's a typo for C49 which is 1uf 50V cap (not 16V), the total for this cap value in the quantity table is right though.
On the 3 main boards C145 was a 47uf 16V cap (minor as it's ok to have 25V listed on the google sheet)
Also it looks like there are 2 different revisions of the main board (I attached some pictures of the 3 boards): on the revision which was used for the cap-list there's an MCU, 3 xtals and a CN9 port while on the other revision there are only 2 xtals and no MCU / CN9 port. The difference for the cap-list is that there's no C132 but a C2 instead (with the same specs) which is located next to the CPU.