The led dimmed after powering on and then gave up... no more responses to power. assuming that the capacitor unit near the power connector inside the tv has gone bad. would like to replace that little rectangular pcb with the capacitor and an LED. Where do I find such a part?
Power board is listed here out of stock but search ebay for the same part# linked
I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771
SOURCE: No Picture & No sound. Red LED, Green LED, Red LED.
If the power supply outputs are good! Then I would say the back light inverter is bad! If the screen stays black and does not come on.
SOURCE: Toshiba 22LV505 TV-DVD:
Check the DC filter caps in the power supply first. Check the 24vdc (or 18vdc for this 22" model) to see if it goes away when the screen goes black.
There are main AC fuse, backlight inverter fuses, T-CON fuses.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
SOURCE: 50pfp5332d got this tv not working. found
Hello
The power regulator PCB has some fault it it. It does not outs proper regulated voltages needed to the other PCBs in your TV. Normally Plasma TV power regulator PCBs are very difficult to repair, and PCB as whole should be replaced. If you give this set to Philips Authorised service center, they also will do this, and they too can do only this. In my opinion, it is best to get it repaired by Philips Service center, because, Plasma displays are very sensitive to static voltages, and repairing it without proper measuring instruments and circumstances, may damge it and it is irreparable. If fuse is gone out, you must aware that there must be som sort of short, or overload inside your TV circuits. If you have technical skill, a proper knoledge of the power regualtor working, and mor confidence and patience, you can do this. You have the ability to follow the schematic diagram of your set, which can be obtained from philips website. You must have a high quality digital multimeter, and static free DC soldering iron to go on. Some times, an Oscilloscope may also be needed.
Beware, your TV has built on most modern electronic technology, and is colstly one. Never attempt anymore on it, if you are fully aware of its working principles, and proper knoledge in Electronics. Philips uses some special components of their own, which cannot be purchased locally.
Determine yourself, what to do. OK.
SOURCE: Doesn't power up. Relay clicks several times,
First of all you should weight the cost benefit of repairing the set versus purchasing a new one.
Depending on the size and model of tv, it may be more prudent to simply cut your losses and buy a new tv rather than spend money swapping out circuit boards in the hopes of repairing a set in questionable condition already. Main / Power Supply / LCD Controller boards will typically run you about $100 each to replace, so weight that against the purchase price of a new tv that comes with a warranty.
Given that, if you are still intent on trying to repair the tv, and it does since you have gone out and acquired a service manual, there are steps you can take.
First of all the service manual should give you some idea what the blink pattern means on the front panel lights. Look that up first.
It does sound power supply board related, but bad capacitors are not always as obvious as the tell-tale bulging or gunk-leaking ones.
Use the manual to find out what voltages you should be getting out of which wires coming off the power supply board. In general, some will be 5VDC, some will be 12VDC, and some will be 24VDC. Test them with a multimeter and see if you are missing any.
Obviously this test requires you to have the unit plugged in and powered up with the safety covers removed. I cannot stress enough the potential dangers involved and if you are not confident with that level of maintenance, I would recommend you leave the live power tests to the trained technicians.
You said you didn't see any bad capacitors, so you may want to just unclip, pull out and then reseat all the multi-wire connector you can get to in case one of them just has a bad connection.
Good luck in the troubleshooting.
If you have any questions or require any further assistance please comment back on this page and I will do my best help you. Please provide the model number of your tv next time as well.
If this was at all helpful, please click on the 4 Thumbs Up rating icon above.
Thank you very much.
Joe.
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