Service manuals, schematics, eproms for electrical technicians
PANASONIC-LC40
Type: 
(DJV)
(DJV)Size
528.3 KB
528.3 KB
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Category
MONITOR
SERVICE MANUAL
MONITOR
SERVICE MANUAL
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Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar panasonic manual?
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- Also known:
40 PANASONIC LC40
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Relevant MONITOR forum topics:
This elderly monster arrived with the error “ 4 blinks “ which the manual suggest is a power board fault There are TWO power boards and a standby power board inside.
On removing rear cover there were two swollen 220uf caps on the standby board, sadly replacing them the 4 blinks remained.
Swapping the two power boards over[ as they look identical , gives a “ 2 Blink “ error , the limited info in the manual suggesting that the fault is on the lower board [ main 2 ].
Both boards have a PFC voltage of around 380 volts at switch on before the relays click out, I have done cold checks on both boards and there are no obvious differences.
The manual has only a block diagram of the power supply so it’s difficult to be sure of values / voltages.
My question is has anybody seen or worked one of these or similar beasts
Many thanks Ken
On removing rear cover there were two swollen 220uf caps on the standby board, sadly replacing them the 4 blinks remained.
Swapping the two power boards over[ as they look identical , gives a “ 2 Blink “ error , the limited info in the manual suggesting that the fault is on the lower board [ main 2 ].
Both boards have a PFC voltage of around 380 volts at switch on before the relays click out, I have done cold checks on both boards and there are no obvious differences.
The manual has only a block diagram of the power supply so it’s difficult to be sure of values / voltages.
My question is has anybody seen or worked one of these or similar beasts
Many thanks Ken
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