No Picture - Acer AM501 Service Manual

8.2.2 No picture

Check U301
No picture
Check
contrast & brightness
control adjust to MAX.
Check
No
intput signal
Yes
Check U301 PIN 8
voltage = 8VU301 PIN 10
PULSE BLANKING
Yes
Check
No
U301 pin 14,17,20
output
Yes
Check C251
voltage = 70VDC
Yes
Check all output
transister
Yes
Check CRT
37
Check
Yes
Check PC
I/O cable
Check
No
Q517, ZD501, ZD201
No
Check
No
connector
No