Amp Protection - LG LAS350B Service Manual
2.1 ch sound bar
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Also See for LAS350B:
- Owner's manual (29 pages) ,
- Simple manual (4 pages) ,
- Manual (4 pages)
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ELECTRICAL TROUBLESHOOTING GUIDE
4. AMP PROTECTION
"S-PROTEC" appears on the FLD.
After unplug power cord, connect again.
Power on.
"Goodbye"
Display, automatic standby
Is the IC701 pin16, 17
"LOW" signal(0 V)?
Is the AMP IC Power
12 V, 32 V normal?
Replace TI AMP IC(IC701, IC702)
YES
YES
YES
NO
YES
NO
YES
NO
YES
12 V: CHECK Q701 Part.
32 V: CHECK SMPS Part.
3-13
OK.
Replace IC701.
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