Question about Philips 37PF5521D 37 in. HD-Ready LCD Television

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Power board for 37pf5521d

Tv won't turn on, just clicks and green light flsahes

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  • 181 Answers

Hello!
You don't need to replace power supply in most cases. If you can to the board itself, it buried deep under metal shield, up side down, remove it from the set by unscrewing 6 machine screws, unplugging few plastic connectors. Be careful, connectors are fragile, gently move those in every direction, while pulling out male part of connectors. You will find at least 1 "bloated" electrolytic capacitor, remove and replace those. It's good have "in circuit" capacitor checker to determine quality of "hot side" of power supply capacitors. If you won't find and replace those, small: 1mf 10mf or 22mf, your set will start up, might even work fine for a while, then will quit for good! I've seen that happen! If you don't have capacitor gizmo, then replace all small electrolytic capacitors on "hot" side of power supply. "hot" is that side, what connects to main power in plug area, contents one large capacitor, I.C. chip diver, power mosfet, etc. worst case scenario: if you can't replace those parts yourself, remove the board and take to local TV repair shop. It won't cost you that much to do so, compare to complete TV repair.
Good luck,
Alex.

Posted on Feb 19, 2012

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Posted on Jan 02, 2017

budmrtn
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SOURCE: 37PF9731D/10 - when turned on the tv power light

The clicking sound is from the main power supply relay being turning on and off, it is driven by hte main board and it gets the power from the standby power supply board.
You need to check the main powwer supply board and the standby power supply board voltages.
Check the resistor in the main power supply board also
Please see my pictures here: http://s807.photobucket.com/albums/yy352/budm/Philips/Philips%2037PF9631D_37/

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Posted on Jun 16, 2011

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The clicking sound is from the main power supply relay being turning on and off, it is driven by hte main board and it gets the power from the standby power supply board.
You need to check the main powwer supply board and the standby power supply board voltages.
Check the resistor in the main power supply board also
Please see my pictures here: http://s807.photobucket.com/albums/yy352/budm/Philips/Philips%2037PF9631D_37/

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

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