Troubleshotting Philips TV

service manual

Philips TV Model: 25PT4423 (L6.2 Chassis)
TV standby, only the red lights
Check the 5V voltage to the MCU. Check R3509 and D6501.
Replace R3509 by 47k. D6501 is type BZX79B5V6.
Check voltage of 150 volts, if the 145V voltage too too low.

Philips TV Model: 32PW6526-05 (Chassis SA10E)
the keys are locked in open and unbiased childlock
To activate, press menu, select feature and press enter, select the child lock and press enter, then enter the code 0, 7, 1, 1 two times, the key now open.

Philips TV Model: GR2.4AA (Chassis GR2.4AA)
No pictures, just black screen
Check R3414, solder re-SMD chip on board CRT

Philips TV Model: TX2112 (Chassis U5N)
Sound missing for too long when the channel is replaced (up to 30 seconds)
MAB8441-T005 is broken (no longer available)

Philips TV (L6.2 Chassis)
There is no power supply voltage
3506 resistors (0.33 ohm, 1W fusible) dead.

Philips TV (Chassis FL1.1AA)
Int shutdown with flash
Check the 18V zener D6376

Philips TV Model: 14PV220 (Epsilon 2001 Chassis)
Die (Total)
7310 Chopper SMPS IC (MC44608 P75). Check the output from start-up pin 5 with pin 8. voltage OK at 290V. If missing check start up resistor 3335 (1K). Check IC 7310.

Philips TV Model: 20PT3742
Dead with LED flashing 4 times
Vertical IC output is not normal. short

PHILIPS Flat TV black line below

philips tv service means a flat with no damage below the black lines and the longer growing upwards. First check the voltage suply B + 115v. vertical IC voltage 15V CT. video voltage 180v. all the normal stresses, I continue checking on the physical condition yoke, and the result turns out ok. I checked elco and resistors in series and the results smua vertical components in good condition. I try to change the vertical ic but always the same. I try to turn on the tv in a long time and there is a voltage difference v-int on cold and hot conditions, it seems that there is damage to the mylar on v.int condensator 33n value which, when in hot conditions its value decreases. I changed and the result philips tv 21 "flat back to normal.

for more details can be downloaded here schema tv philips = download schematic