Philips PLCD190P5 power supply

[The Performer]

Re: Philips PLCD190P5 power supply

The fet WILL NOT check like a transistor. I refered you to a video on how to check a fet with a multimeter.
When the supply was trying to start, did you check to see what the pfc voltage was? accross the main filter cap.
I would be using a 60 watt lamp, not sure how the supply will act with a 25 watt lamp. I would think that the lamp would light with only 200ma of current going through it.

Right, I did follow the video guide of checking the FET, the results I got were what I wrote in the last post. I think even still Im going to get one of those little chinese component testers one day...

Ok, so that being said, the FET checked out bad... Are you saying I might put it back in, change my lightbulb to a 60 watt and try again or am I asking for trouble? When I had the FET in circuit and during the time of the light burning bright, My voltages were dropping (for example I think I remember the 160v on the Drain pad was dropping down (Short circuit symptoms) Unless like you say, everything was getting choked by the 25 watt bulb...

[budm]

Re: Philips PLCD190P5 power supply

If I were you I would replace the PFC IC also, and use 60 ~ 75W lamp.

[R_J]

Re: Philips PLCD190P5 power supply

I'm not the one testing the parts so can't be sure, replace the fet and ic and see what happens.

[The Performer]

Re: Philips PLCD190P5 power supply

Well son of a b*tch... I Put a 53watt bulb in my test cable, put the FET back in, powered it up, checked voltage across the main filter cap and Im looking at right over 400v...

[The Performer]

Re: Philips PLCD190P5 power supply




Budm and R_J, you guys are f*cking awesome! I'm the proud owner of a working 11 year old TV.

Just now realizing it doesn't have wall mount attachments...
***EDIT: It does have wall mount attachments, a metal plate on the inside of the plastic back panel, no actual frame work inside... Kinda sketchy...***

[R_J]

Re: Philips PLCD190P5 power supply

Well if it does'nt have wall mounts I guess its junk. See it was'nt that hard after all.
I think almost every flat panel tv has the bolt holes for wall mounting, thats standard

[budm]

Re: Philips PLCD190P5 power supply

Well, the gamble pays off, I do not like putting the new MOSFET in without replacing IC when finding damaged Gate drive parts and taking a chance of blowing brand new FET which some time can be expensive or hard to get.