A Phillips tv model 27PT543S37A will not turn on. The front panel green
light comes on. Sometimes I can hear a clicking sound like a relay trying to
latch. But the tv will not come on.

A few days ago, after a few clicks, the tv would come on and work OK.

Any help will be greatly appreciated.

AL

you need to check the eletro caps
around the power supply.
had the same prob with a nec tv.

"Alfred Lorona" wrote in message
...
A Phillips tv model 27PT543S37A will not turn on. The front panel green
light comes on. Sometimes I can hear a clicking sound like a relay trying
to
latch. But the tv will not come on.

A few days ago, after a few clicks, the tv would come on and work OK.

Any help will be greatly appreciated.

AL

Here are some tips for your set:

Dead/Shutdown Problems:

C2405 220uf@25V Electrolytic Capacitor HZ circuit

C2455 47uf@25V Electrolytic Capacitor HZ circuit

D6460? (Producing 125 vdc?) FS Diode 9340 559 50112 (Cathode off Q7460
Collector) Part # 2422 086 10869

Fuse 1500 (Line Fuse) 4 amp @ 250 volts

IC7521? (Regulator)

Q7460 Marked BU4508DX (HZ Output Transistor) Philips # 9340 550 92127
HZ circuit

Q7461 Marked BC 337-25 (L CBE R) Part # 3198 020 43530 HZ circuit

Q7463 Marked BC 327-25 (L CBE R) Part # 3198 020 43430 HZ circuit

R3340 (10 ohm 1/3w) on CRT board? Replace with a 1/2 watt. Taken out by
CRT arc? Supplies about 200 volts to the collectors of the video driver
transistors. If this voltage is low, it causes excessive brightness
(Excessive beam current), causing the set to "shut-down". If the
shut-down is too quick, you will NOT see the excess brightness, because
the picture tube has not warmed-up enough to display anything on the
picture tube. To see if the set displays "excess brightness", you will
need to turn the set "on" about 5 to 10 times. This will heat the
picture tube enough to display "excess brightness", if that is the
problem.

R3532? (location: Before a SMPS Transformer primary winding)

Service Data (See Philips Force 32 Disc Volume 2003 Issue 5) (Philips
Manual 7638)

Good Luck!
Robert

Here are some tips for your set:

Dead/Shutdown Problems:

C2405 220uf@25V Electrolytic Capacitor HZ circuit

C2455 47uf@25V Electrolytic Capacitor HZ circuit

D6460? (Producing 125 vdc?) FS Diode 9340 559 50112 (Cathode off Q7460
Collector) Part # 2422 086 10869

Fuse 1500 (Line Fuse) 4 amp @ 250 volts

IC7521? (Regulator)

Q7460 Marked BU4508DX (HZ Output Transistor) Philips # 9340 550 92127
HZ circuit

Q7461 Marked BC 337-25 (L CBE R) Part # 3198 020 43530 HZ circuit

Q7463 Marked BC 327-25 (L CBE R) Part # 3198 020 43430 HZ circuit

R3340 (10 ohm 1/3w) on CRT board? Replace with a 1/2 watt. Taken out by
CRT arc? Supplies about 200 volts to the collectors of the video driver
transistors. If this voltage is low, it causes excessive brightness
(Excessive beam current), causing the set to "shut-down". If the
shut-down is too quick, you will NOT see the excess brightness, because
the picture tube has not warmed-up enough to display anything on the
picture tube. To see if the set displays "excess brightness", you will
need to turn the set "on" about 5 to 10 times. This will heat the
picture tube enough to display "excess brightness", if that is the
problem.

R3532? (location: Before a SMPS Transformer primary winding)

Service Data (See Philips Force 32 Disc Volume 2003 Issue 5) (Philips
Manual 7638)

Good Luck!
Robert

Alfred Lorona ha escrito:

A Phillips tv model 27PT543S37A will not turn on. The front panel green
light comes on. Sometimes I can hear a clicking sound like a relay trying to
latch. But the tv will not come on.

A few days ago, after a few clicks, the tv would come on and work OK.


resolder power supply area and check or replace that power relay.