27-3V07 PSU

27-3V07 PSU

Preliminary Information
Leak Risk	Medium
Batteries	None
Mounting Technology	Through Hole
Capacitor Types	Aluminum Electrolytic, Ceramic
Destructive Entry	No

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Known Issues

Sparking Sound and Fish Smell

• Leaking cap fluid boiling from shorted traces

• 

  Leak from capacitor mounted above caused a short on two traces on the bottom causing charring and audible sounds

Solutions

• Clean & recap

Disassembly Notes

PSU is attached with ISA style card edge connector

Original Parts

Main PSU Board

31-1032

Fuse: 250V 6.3A

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter/Size	Pitch	Temp	Type	Brand	Series
C35, C36	2	680uF	200V	Through Hole	30mm	10mm	85C	Electrolytic	Nichicon	CE
C4, C31, C32	3	470uF	16V	Through Hole	10mm		85C	Electrolytic	Nichicon	M
C28, C24	2	470uF	35V	Through Hole	10mm		85C	Electrolytic	Nichicon	M
C21, C18	2	100uF	160V	Through Hole	16mm		85C	Electrolytic	Nichicon	M
C11,	1	1000uF	16V	Through Hole	10mm		105C	Electrolytic	Nichicon	PL(M)
C8	1	6800uF	10V	Through Hole	16mm		105C	Electrolytic	Nichicon	PL(M)
C6	1	2200uF	6,3V	Through Hole	12mm		85C	Electrolytic	Nichicon	M
C5, C9	2	47uF	50V	Through Hole	6.5mm		85C	Electrolytic	Nichicon	M
C7	1	220uF	25V	Through Hole	8mm		85C	Electrolytic	Nichicon	M
C16, C15, C20	3	1uF	50V	Through Hole	5mm		85C	Electrolytic	Nichicon	M
C12, C13	2	4.7uF	50V	Through Hole	5mm		85C	Electrolytic	Nichicon	M

Sub-Board

31-1022

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter/Size	Pitch	Temp	Type	Brand	Series
C19	1	2.2uF	50V	Through Hole	5mm		85C	Electrolytic	Nichicon	M
C33	1	10uF	6.3V	Through Hole	5mm		85C	Electrolytic	Nichicon	M

Sub-Board

31-1033

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter/Size	Pitch	Temp	Type	Brand	Series
C43	1	220uF	25V	Through Hole	8mm		85C	Electrolytic	Nichicon	M