Samsung 1510MP Service Manual page 17

5-3 No Picture (TV, Video 1, Video 2)
Does the signal appear at
Pin 1 of CN300?
Yes
Does the signal appear
at Pin 14, 16 of IC302?
Yes
Does the signal appear at Pin 61,
62 and 63 of IC300?
Yes
Check X301 and replace mainboard.
MH15NS/MH17NS
No
Check replace the tuner.
No
Check related circuit of IC302.
No
Check related circuit of IC300.
5 Troubleshooting
5-3