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--- preface:why_x68000_s_caps_are_almost_broken [2014/09/16 20:24] – [EXPERT,SUPER,XVI,030 (SH4 Unit)] eidis
+++ preface:why_x68000_s_caps_are_almost_broken [2019/08/27 20:45] (current) – external edit 127.0.0.1
@@ Line 23: / Line 23: @@
 ====== ACE (SH2 Unit) ======
+It has the same design as the PSU of Expert but features lower rated capacitors. It is recommended to use use the capacitor ratings which are mentioned in the Expert section.
 ====== EXPERT,SUPER,XVI,030 (SH4 Unit) ======
-All info taken from: http://x68k.net/x68dengen/
+Almost all info taken from: http://x68k.net/x68dengen/
 All X68000 power supplies fail because of the capacitors. Here are a few common symptoms and solutions:
-  - Main power is connected, front LED is glowing red but the system does not react to front soft-power switch.
+  - Main power is connected, front LED is glowing red but the system does not react to front soft-power switch. Check if ZD31 or anything around it is burnt. Replace ZD31 and all electrolytic capacitors. There are some cases when Q32 also needs to be replaced. In some rare cases PC31, PC51, PC52 also need to be replaced.
+  -R35 rupture is caused when C31 capacity has decreased to the point that it is no longer able to supply constant voltage and current. In this case it is advisable to replace Q31, Q32, R35, ZD31.
+  -The fuse gets blown if C9 is faulty. Replace all electrolytic capacitors, 4A fuse and check if there are no signs of damage to the ZD31 or near it.
+  -Most parts though discontinued have generic replacements available. The only custom-made part is the transformer but it is very reliable and does not break easily.
-Check if ZD31 or anything around it is not burnt. Replace ZX31 and all electrolytic capacitors. There are some cases where Q32 also needs to be replaced. In some rare cases PC31, PC51, PC52, etc also need to be replaced.
+**Schematics**
+  *[[http://nfggames.com/x68000/Schematics/PSU/X68000_EXPERT_PSU_Schematics_v1.5.pdf|X68000 Expert PSU Schematics]]
-*R35 rupture is caused when C31 capacity has decreased to the point that it is no longer able to supply constant voltage and current. In this case it is advisable to replace Q31, Q32, R35, ZD31.
-*The fuse gets blown if C9 is faulty. Replace all electrolytic capacitors and 4A fuse and check if there are no signs of damage to the ZD31 or near it.
-Most parts though discontinued have generic replacements available. The only custom-made part is the transformer but it is very reliable and does not break easily.
 ^Part number  ^Part description  ^Notes  ^
@@ Line 67: / Line 67: @@
 ====== PRO ======
+**Schematics**
+  *[[http://nfggames.com/x68000/Schematics/PSU/X68000_PRO_PSU_Schematics.pdf|X68000 Pro PSU Schematics]]
 ====== Compact XVI,030 Compact ======
+These are more tolerant. Their capacitors leak but usually do not kill anything and a simple recap is all that is needed.
+**Schematics**
+  *[[http://nfggames.com/x68000/Schematics/PSU/X68000_Compact_030_PSU_Schematics.pdf|X68000 Compact/030 PSU Schematics]]