No video output from PC input (INPUT4)
Are signal fed from pins 1,2,3(Analog-R/G/B),and 13,14(H Sync/V Sync) of input terminal (SC401) to pins T1,V1,M1,AA1,Y1 of
IC801 (M2)?
No
Check peripheral circuits of IC801 and Q801,Q803,Q805.
Digital broadcasting cannot be received.
[FRONT-END SECTION]
Yes
Are IF_OUT_P/N signal send from
pin (20) (19) of TU1101 respectively?
No
No
Are signal fed to pins U25,U26 of
IC8101?
Check UNT1101 and its peripheral
circuits.
Yes
Yes
Check the TU1101.
Check between TU1101 and
UNT1101.
Yes
Yes
No
Yes
Are signals from B16, A16, P22, P23, R22, R23, T22,
T23, U22, U23, V22, V23 of IC801 normal?
Check LCD_CONTROL PWB.
Check IC801 and peripheral circuits.
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