Dpms Failure - Samsung DP15HS Service Manual

5 Troubleshooting

5-1-2 DPMS Failure

Check signal source
H/V sync video level.
Make No H/V sync (power off
mode)
LED blinks
Yes
+12 V line off
Yes
IC602 Pin 4
voltage exists?
No
IC601 Pin 1 output
2
voltage exists?
Yes
Done
5-2
No
Check IC201 Pin 40.
No
Check IC201 Pin 5.
Yes
Check IC201 Pin 6.
Check and replace IC602.
No
Refer to 5-1-1 No Power Supply.
WAVEFORMS
2 100V (IC601, #1)
CH1 P-P = 100V CH1 RMS = 325.8 V
DP15H*/DP17L*