When we turn on our Philips 27PT5633S 37A, the power light comes on, the TV clicks, but there is no picture. Before it completely stopped working, each time we turned on the TV, it would take longer and longer before the TV turned on, until it stopped coming on.
Sounds like one or multiple Reservoir Capacitors in the Power Supply were starting to dry up. You also get problems like this from dry joints in the Power Supply. You need a technician to take a look for certain.
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I had the same problem with my tv, same make and model. I first continuously turn on and off my tv manually until I could get some kind of picture. This procedure took maybe five minutes. I was able to get a fine picture and sound, as if it was brand new! Other things to keep in mind, try to eliminate dust build up as much as possible.. Hope this helps out...
verify your b+ voltage on collector of horizontal output transistor 7405 and if 130 volts is missing or way off go to power supply circuit and verify voltage on pin 14 of ic 7511 and if there is not approx 150 volts present should replace that ic and startup capacitor 2511 and opto isolator 7513. if 130 volts is present on collector of 7405 then scope signal on 7404 and if not clean signal replace micro processor
First it's not just Philips, they all are making TV to only last a few years now, they are not made to last, thats how they make money by selling you something you will have to replace in just a few short years. As far as your problem, you may have a cold solder joint somewhere, do you have a 25/35 watt soldering iron? if so try soldering pins on the regulator IC the vertical IC the horz output transistor and drive transformer and the flyback, in fact solder just about as much as you can, spend some time in there soldering. Dont forget to ubplug the set and stay away from the high voltage anode connected to the picture tube, it can still hold a charge even if the set is unplugged, do not try to take it off. Hope this helps!