BadGoldEagle
Well-known member
Hi all
One of the AC filter capacitors in my IIc's monitor blew a couple of days ago. I downloaded the SAMS for it (it seems to be the only service manual available), but it doesn't have a capacitor reference/list. Plus my model is 240V so I very much doubt there's a list for it out there.
My monitor is not NOS, it has seen some use but I doubt it's a high hour tube. The electrolytics looked fine (no bulging) but I decided to swap them out anyway (the vertical got screwy not that long ago). I recommend getting 105C+ rated caps. Things get kinda hot in there and it'll only do those new caps a favor. Most of the ones I bought are Nichicons (some are Panasonic and others are TDK), and there are a couple non polarized caps on the main board but they were all easily obtainable.
Here's what's on the boards
1x 25V 3300uF [C701] (that's the big one with a diameter of approx 25mm)
3x 35V 10uF [C104 & C413 & C405]
2x 16V 47uF BI-POLAR / NON-POLARIZED [C107 & C102]
1x 16V 10uF BI-POLAR / NON-POLARIZED [C108]
1x 25V 10uF [C110]
1x 25V 4uF BI-POLAR / NON-POLARIZED [C515]
1x 50V 100uF [C514]
2x 16V 1000uF [C510 & C409]
1x 16V 47uF [C105]
3x 50V 4.7uF [C111 & C702 & C505]
1x 16V 100uF [C103]
1x 16V 330uF [C508]
1x 63V 100uF [C517]
2x 350V 1uF BI-POLAR / NON-POLARIZED [C513 & C518]
1x 16V 2200uF [C704]
1x 16V 470uF [couldn't read...]
1x 16V 220uF [C411]
1x 33uF [C408]
1x 250V 0.1uF X FILTER CAP (daughterboard) [replace with film capacitor]
2x 4700pF (0.0047uF) Y Filter CAP (daughterboard) [replace with film capacitor]
Here's what I recommend getting (remember that you can always go up in voltage as long as you keep the same capacitor value! This makes the list slightly shorter)
1x 25V 3300uF [C701]
4x 35V 10uF [C104 & C413 & C405 & C110]
2x 16V 47uF BI-POLAR / NON-POLARIZED [C107 & C102]
1x 16V 10uF BI-POLAR / NON-POLARIZED [C108]
1x 25V 4uF BI-POLAR / NON-POLARIZED [C515]
3x 63V 100uF [C514 & C103 & C517]
2x 16V 1000uF [C510 & C409]
1x 16V 47uF [C105]
3x 50V 4.7uF [C111 & C702 & C505]
1x 16V 330uF [C508]
2x 350V 1uF BI-POLAR / NON-POLARIZED [C513 & C518]
1x 16V 2200uF [C704]
1x 16V 470uF [couldn't read...]
1x 16V 220uF [C411]
1x 33uF [C408]
1x 250V 0.1uF X FILTER CAP (daughterboard) [replace with film capacitor]
2x 4700pF (0.0047uF) Y Filter CAP (daughterboard) [replace with film capacitor]
Last but not least, Your Mileage May Vary. I cannot guarantee that your board has the same caps.
Hope this helps someone!
One of the AC filter capacitors in my IIc's monitor blew a couple of days ago. I downloaded the SAMS for it (it seems to be the only service manual available), but it doesn't have a capacitor reference/list. Plus my model is 240V so I very much doubt there's a list for it out there.
My monitor is not NOS, it has seen some use but I doubt it's a high hour tube. The electrolytics looked fine (no bulging) but I decided to swap them out anyway (the vertical got screwy not that long ago). I recommend getting 105C+ rated caps. Things get kinda hot in there and it'll only do those new caps a favor. Most of the ones I bought are Nichicons (some are Panasonic and others are TDK), and there are a couple non polarized caps on the main board but they were all easily obtainable.
Here's what's on the boards
1x 25V 3300uF [C701] (that's the big one with a diameter of approx 25mm)
3x 35V 10uF [C104 & C413 & C405]
2x 16V 47uF BI-POLAR / NON-POLARIZED [C107 & C102]
1x 16V 10uF BI-POLAR / NON-POLARIZED [C108]
1x 25V 10uF [C110]
1x 25V 4uF BI-POLAR / NON-POLARIZED [C515]
1x 50V 100uF [C514]
2x 16V 1000uF [C510 & C409]
1x 16V 47uF [C105]
3x 50V 4.7uF [C111 & C702 & C505]
1x 16V 100uF [C103]
1x 16V 330uF [C508]
1x 63V 100uF [C517]
2x 350V 1uF BI-POLAR / NON-POLARIZED [C513 & C518]
1x 16V 2200uF [C704]
1x 16V 470uF [couldn't read...]
1x 16V 220uF [C411]
1x 33uF [C408]
1x 250V 0.1uF X FILTER CAP (daughterboard) [replace with film capacitor]
2x 4700pF (0.0047uF) Y Filter CAP (daughterboard) [replace with film capacitor]
Here's what I recommend getting (remember that you can always go up in voltage as long as you keep the same capacitor value! This makes the list slightly shorter)
1x 25V 3300uF [C701]
4x 35V 10uF [C104 & C413 & C405 & C110]
2x 16V 47uF BI-POLAR / NON-POLARIZED [C107 & C102]
1x 16V 10uF BI-POLAR / NON-POLARIZED [C108]
1x 25V 4uF BI-POLAR / NON-POLARIZED [C515]
3x 63V 100uF [C514 & C103 & C517]
2x 16V 1000uF [C510 & C409]
1x 16V 47uF [C105]
3x 50V 4.7uF [C111 & C702 & C505]
1x 16V 330uF [C508]
2x 350V 1uF BI-POLAR / NON-POLARIZED [C513 & C518]
1x 16V 2200uF [C704]
1x 16V 470uF [couldn't read...]
1x 16V 220uF [C411]
1x 33uF [C408]
1x 250V 0.1uF X FILTER CAP (daughterboard) [replace with film capacitor]
2x 4700pF (0.0047uF) Y Filter CAP (daughterboard) [replace with film capacitor]
Last but not least, Your Mileage May Vary. I cannot guarantee that your board has the same caps.
Hope this helps someone!