Hi Everyone
The aim of this post is to create the first reference online of capacitors used in the main and neck board of the Apple 12″ Macintosh Monitor (M1296). I will link to a spreadsheet of capacitor values that has been created by myself and verified / checked for accuracy and show photos of the recap.
This monitor’s design has the front bezel match the curve and width of certain Macintosh computers, famously the LC line and also IICI. It is a fixed resolution 512 x 384 @ 60 Hz RGB monitor which used composite sync. Internally it is a Japanese design by Matsushita and uses a shadow mask CRT tube. It is not compatible with traditional analogue RGB video signals, even when fed clean C-SYNC.
I found the build quality to be strong and pleasing to repair. My monitor featured vertical collapse when turned on and was known to have little use from new, cosmetically perfect and from a single owner in Sydney, Australia.
Capacitor C418 was the failure point for me, along with rotted traces from heavy capacitor leakage. The main board was indeed wet and electrolyte pooling in the grooves of the case.
I chose to re-cap everything including the neck board as clearly I felt like a challenge. After repairing some traces and verifying my work, the monitor was tested as working ‘first go’. The image remains pristine – clear, converged well and bright.
PDF spreadsheet M1296 Repair Recap rev 2.xlsx
Unfortunately the photos I took were lost.
|
Apple 12″ Macintosh RGB Monitor M1296 |
||
|
Main board |
uF |
V |
|
C401, C413, C502, C523 |
1 |
50 |
|
C416 |
22 |
25 |
|
C418 |
2200 |
6.3 |
|
C420, C519 |
220 |
25 |
|
C501, C526 |
47 |
50 |
|
C507, C520, C522 |
10 |
50 |
|
C512, C414 |
100 |
50 |
|
C517 |
100 |
25 |
|
C518 |
10 |
160 |
|
C521 |
82 |
160 |
|
C525 |
0.1 |
50 |
|
C908 (Comment: Negative Black) |
220 |
450 |
|
C914 |
22 |
100 |
|
C915, C921 |
10 |
100 |
|
C919 |
330 |
180 |
|
C920, C417 |
2200 |
35 |
|
Neck board |
uF |
V |
|
C203 |
1 |
50 |
|
C205 |
220 |
100 |
|
C206, (C517 from main board) |
100 |
25 |
|
C2B4, C2G4, C2R4 |
2.2 |
50 |
|
C2R2,C2R1,C2G1,C2B1,C2G2,C2B2 |
47 |
25 |
|
C6B5, C6R5, C6G5, C207 |
1 |
160 |
|
C6R3, C6G3, C6B3 |
47 |
25 |
By Jeremy Barr-Hyde for JBRetro Collect
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