Question about Philips 23PF5320 23 in. HD-Ready LCD Television

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23pf5320/28 need schematic for power supply board

23pf5320/28 Need schematic if anyone has one please email it to me.
I have a transformer gone bad and cant identify it to replace.
Transformer #'s
242254900503
HJC-S4143
HJC DV-130-1 0630q


Horner8@msn.com

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SOURCE: magnavox 42mf521d/37 sound but no picture

The solution is the same I used for srjohnnichol, June 4, 2009. I promise you, this will correct your problem. Stop waiting an getter done!

Posted on Aug 01, 2009

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SOURCE: Need info on component 3071 on power supply board - burned up.

Its been a while since i worked on that power board. But I believe you are refering to the orange diode that runs into the single connector for the video board next to the power supply. I replaced mine with a 1n914 diode after replacing the 2200uf lytic cap and the tv fired right up.
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Posted on Sep 11, 2009

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SOURCE: i think i need to replace my transformer on a

try radio shack or try ebay or try this best site
www.globalsources.com . good luck.

Posted on Apr 29, 2010

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SOURCE: When I power up the the tv it make a chirping

Have you checked the secondary diodes for short circuit/leakage. That will make a SMPS chirp.
Hope that helps.

Posted on Feb 27, 2011

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Tv won't turn on. replaced bad caps and after some testing it turned out that the power supply board wasn't giving the supposed voltages.


This problem is not easily to be solved.Tries to changes all the capacitors components even if u think is good around the bad capacitors surrounding area.After that,if u still have the same problems.This problem could be any high voltage components parts like transformers to ICS power regulator.Trying to fix this power supply board probably beyond your ability and u must also have the tv power supply board original schematic and electron scope too . .To measure those power transformers and ics power regulator output.Tries websites like Shopjimmy.com,EBay.com to buy a whole new refurbish tv power supply board for the replacement that is ur best bet.

Sep 27, 2012 | Insignia NS-LTDVD19-09 LCD TV

1 Answer

PROfORM xp TREADMILL TURNS ON BUT BELT DOES NOT RUN


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Sincerely. Mery Christmas.
erensto cuadra
managua, nicaragua
12_19_2011_6_06_24_pm.gif

Dec 18, 2011 | Proform XP 590S TREADMILL Drive Motor

1 Answer

Polaroid model 3211tlxb sept. 2007.ec18 on the power board gets very hot and tv shuts down. i have replaced ec18 and q16 no help


Hi mrdink010,


I've checked my service manual collection but I don't have the copy on this model. I've also search it online and to my links of the service manual but I can't find one to view the schematic diagram of your unit.
The power supply gone to excessive heat due to over current flowing on its circuitry. This is caused by faulty parts like the transistor, IC's, diode, resistor, capacitors, transformer on its line that in most cases have a partial leak. This is hard to diagnose and needs the skills of an expert to determine which part gone bad. Usually this is not caused by one parts only but most of the time multiple parts gone to malfunction.

I would advice you to replaced the entire power supply board rather than troubleshoot this kind of symptoms because it will cost almost the same. Click this LINK(http://www.shopjimmy.com/polaroid-860-az0-mlt666amh-power-supply.htm) for the replacement. Double check the actual part no. of your board that is printed on the white sticker on the board itself before ordering online.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Sep 29, 2011 | Polaroid Televison & Video

2 Answers

I also have an Athena ASP4100 sub woofer which blew the fuse on the circuit board and when I replaced the fuse, it just blew it again. As an electrician, my understanding would be the circuit board has a...


You should look at the circuit board for the power amplifier and check for any leaking or bulged electrolytic capacitors. If this speaker uses the circuit boards made by AMI (such as most JBL and Mission sub woofers around 1999-2001 vintage) they had a lot of problems with this as well as bad modules. Google for the module S53AMI and you will find lots of info if this is what you have in that Athena.

Feb 21, 2011 | Athena AS-P4000 Subwoofer

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Backlight inverter aoc lm729 Schematic diagram Please I am a repair technician (Retired) Lcd layer working picture on screen backlight goes off intermittently and now for almost all of time. Flashes...


Here is the service manual: http://elektrotanya.com/?q=showresult&megnev=AOC%20&megnev2=LM729%20&kategoria=&kat2=all

You will need test lamp to verify if it is the inverter or the lamp assemblies.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Sep 09, 2010 | AOC LM729 17" LCD Monitor

3 Answers

My SONY STR-DE835 receiver amplifier is showing PROTECTOR on the digital readout.Anybody know what that means.


These models are known for this issue.
I've had my share in the shop here.
Disconnect all speakers,turn speakers off, try headphones only
If it still persists then there is either :
1. power supply capacitors gone bad or 2. The thermal fuse in the transformer is open.
A tech can very easily find out if the thermal fuse is open by checking the primary of the transformer
if the plastic is shrinking away from the power supply capacitors then they've gone bad

Jul 27, 2010 | Sony STR-DE835 Receiver

1 Answer

Amp MC-D80. No Indication of power on.Checked power supply board(no schematic). No + or - 12v. All other voltages seem ok. Any known common failure? Thanks Art


Simply follow the 12v supply back to where it starts, which should be where the transformer wires join the PC Board. If you don't have 12v AC there the transformer has gone. If you do, then follow it with your multimeter till it goes. That will lead you to the culprit.

Jan 07, 2010 | Audio Players & Recorders

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Luxman LV 105 Amplifier gone dumb


Hi: If the Amp has an audio output transformer, check for bad solder connections to the pc board, This are the wires from the transformer to the PC board. Another place to look is the earphone connection plug. If the jack has a bent contact inside of it, you will have all sound cut off. Good Luck.

Al

Mar 09, 2008 | Carver PM950 Amplifier

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