Troubleshooting - Samsung VP-MX20H Service Manual

4. Troubleshooting

Samsung Electronics
If the power is not
Supplied 1
Does the
fuses(FCH0~2)
Work normally?
Yes
Is 3V accepted in
33Pin Of ICP0?
Yes
Does
a voltage-output to the
4pinOf QP01,03,05,09,11,12,13 work
normally?
Yes
Does
a voltage-output to the
1pinOf QP01,03,05,09,11,12,13 work
normally?
Yes
Main board
Repair/replacement
No
Fuse replacement
No
A
No
Check LP0,02,04,07,09,2,3
Refer to a pattern
image of Table 4-1, 4-2
No
Replace inferior FET-SILICON
Refer to Wave pattern
image of Table 4--1, 4-2
Troubleshooting
4-