Filter
Top Products
5 Troubleshooting
5-2 SyncMaster 800TFT
5-2 No Video
Check signal cable and connection.
Check TFT-LCD panel and Inverter.
Check IC201 and related circuit.
Does the outpus signal appear at RA403 and
R411 of IC406? (LDTGB, LVSYNCB, LHSYNCB,
LCKBB)
Is the output of Pins 1, 17 of IC501 High ?
Yes
No
Yes
No
Does the analog video signal appear at R211,
R212, R215? (BLUE, GREEN, RED)
(IC201)
Yes
Check IC201, IC206 and related
circuit.
Does the sync signal appear
at the output of Pin 14 of IC201and Pin 3 of IC 206 ?
(V-SYNC, H
*
V SYNC)
Yes
No
Check the related circuit for these
ports.
No
Check IC501 and related circuit.
No
Check IC501 and related circuit.
No
Check IC 300 and related circuit.
No
Does the input signal appear at the Pins 40, 41
of IC 300?
(PLL H
*
V MX
-
PDEN)
Yes
During power on-off does the input signal
appear at the Pin 29,30 of IC300?
(AD
-
SDA, AD
-
SCL)
Do the clock and sync signal appear at Pin
115, 117 of IC 300?
(DCLKAB, MX_HSYNC) and does the digital video
signal appear at thr output port PDA, PDB)?
Yes
During power on-off dose the input signal
appear at the R 407 and R 408 ?
(MX
-
SDA, MX
-
SCL)
Yes
7 8
9 10
Check IC 406 and related circuit.
Yes
1 2 3 4
5 6
No
Check IC501 and related circuit