Philips DVR7100/75 Service Manual page 14

4. No Video output : Flow chart
No video output
Yes
Check J19 connector is
Connected properly
Yes
Check R395 has video
waveform
Yes
Replace J19
14
Firmly connect the
No
connector to right place
Check R68 has
No
proper signal
Yes
Check L16 have
right voltage (3.3v)
Yes
Send back to zinwell
Send back to
No
zinwell
No
Check U11 voltage
Is correct
Yes
Send back to zinwell
No
Replace U11