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2. V
ideo doesn't display
Check J5007 Pin3C
Can you see the normal waveform?
J5007 may have problem. Replace this Jack.
Check the input(Pin1 or Pin8) of AV switch
(IC5003). Pin1 is for video1,Pin8 is for video 2.
Can you see the normal waveform?
After checking the Power of AV switch you should
decide to replace AV switch or not.
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Check the output(Pin56) of AV switch(IC5003).
Can you see the normal waveform?
After checking the Power of AV switch you should
decide to replace AV switch or not.
Check the input(Pin1) of LPF(IC4006).
Can you see the normal waveform?
After checking the Power of LPF you should
decide to replace LPF or not.
Check the output(Pin8) of LPF(IC4006).
Can you see the normal waveform?
After checking the Power of LPF you should
decide to replace LPF or not.
Check the input(PinH26) of BCM3550(IC4006).
Measure waveform at C1010 because it
’s more
easy to check.
Can you see the normal waveform?
This board has big problem because
Main chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You
should decide to replace BCM3550 or not.
Summary of Contents for 32LC2DA
Page 22: ...BLOCK DIAGRAM 22...
Page 23: ...23 EXPLODED VIEW 32LC2DA 010 020 050 070 080 090 100 030 150 040 140 120 130 060 060 110...
Page 27: ...27 EXPLODED VIEW 42LC2DA 010 020 090 110 120 130 140 150 030 040 080 100 070 061 061 060 050...
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