2. Video doesn't display
Check J5007 Pin2
Can you see the normal waveform?
Yes
Check the input(Pin1) of AV switch (IC5003). Pin1 is for video1,Pin8 is for video 2.
Can you see the normal waveform?
Yes
Check the output(Pin56) of AV switch(IC5003). Can you see the normal waveform?
Yes
Check the input(Pin1) of LPF(IC4006).
Can you see the normal waveform?
Yes
Check the output(Pin8) of LPF(IC4006). Can you see the normal waveform?
Yes
Check the input(PinH26) of BCM3550(IC1001). Measure waveform at C1010 because it’s more easy to check.
Can you see the normal waveform?
J5007 may have problem. Replace this Jack. No
| After checking the Power of AV switch you should |
No | decide to replace AV switch or not. |
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| After checking the Power of AV switch you should | |
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| decide to replace AV switch or not. | |
No | |||
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| After checking the Power of LPF you should | |
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| decide to replace LPF or not. | |
No | |||
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| After checking the Power of LPF you should |
No | decide to replace LPF or not. |
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This board has big problem because Main chip(BCM3550) have some troubles.
Yes After checking thoroughly all path once again, You should decide to replace BCM3550 or not.
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