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Component failure COMPONENT ON POWER SUPPLY BOARD MELTED MARKED C449 NEED SCHEMATIC OF BOARD TO IDENTIFY WHAT THE COMPONENT IS AND WHERE TO BUY PART,IT IS DEFINITELY NOT A RESISTOR- THANKS

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Anonymous

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I have thes same problem - a capacitor 449 is smoking, and so it appears the red color on my tv is out, and of course i have a burning smell. the model is PCN5425R. Any help is apreciated...

Posted on Apr 19, 2010

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What model you have and what brand?

Posted on Jun 12, 2009

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Free schematic diagram


You may not be able to get a schematic. You need to be able to troubleshoot electronics without a schematic. Check where the AC cord connects to the circuit board. In general there should be a fuse and a transient suppressor. Next will be the transformer if there is one or rectifier diodes. These usually fail in a lightning strike. There is also the probability of other component failures, but you won'y know that until you repair these components.

Sep 01, 2014 | Sound Around Pyle Home PTCDS2UI AM/FM...

1 Answer

I have a blown power supply board for my Samsung SP5207HR Model EX5207 Version 1 rear projection televison. I trying to locate the following parts to repair it: 1 schematic for Samsung SP5207HR ...


The components that you require will be freely available but a stockist will need to know what they are, The transistor will be, for example 2SD1308Q the diode maybe a 1N4007 and capacitor say 33nF. To find the values, look on the component and it will be printed on it along with the manufacturer's idents and date codes etc.
Hope that helps you get a result.

Nov 17, 2010 | Samsung Televison & Video

1 Answer

The dishwasher will not turn on


Congratulations - you found the fault !

The options you have are -
Buy areplacement board from a spares centre.
Buy a take- off board from a scrap one on Ebay.
Or - Learn about electronic repair - and identify the burnt component , buy the parts and replace it yourself.

You can take it to an electronic repair shop - if you can find one - or a electronic supply shop - and ask for a new one of "them".

If replacing a burnt component - often there is a cause other than just that component.
Experience tells you what else might be wrong to cause it.

Aug 04, 2009 | Maytag MDB9600A Jetclean II Built-in...

2 Answers

Power supply bad on Sharp Aquos LC - bad board - schematic to ID?


Buy the green light going on means Standby is ok. Next, would be to locate the plug coming from the main board to the power supply and find the post that says PO which means power on. With your meter on that post, press the power button as see if the reading goes High, if it does then the main board is able to turn on the power supply. Next, find the plug on the power supply that goes to the inverter( the long board on the side) remove it and see if you have 24 volts coming out of the power supply when you press the power. If you do, then the inverter board is bad, if you don't have 24 v, then the power supply is bad. There are NO diagrams available for these set other than a flow chart if you can find one. A regular svc tech does'nt need a manual for these anyway.

Let me know how you do Kathy ?

May 17, 2009 | Sharp Televison & Video

1 Answer

POWER SUPPLY BAD, NEED SCHEMATIC DIAGRAM COMPONENT LEVEL


Polaroid will not release component schematics not even to service centers as they are designed to replace the entire modules while under warranty out of warranty there is very little Chance of obtaining new replacement parts. As i have a 2006 LCD and a 2007 Plasma Polaroids and polaroid told me they are considered a disposable TV replacement parts are not available and suggested that I try ebay

Apr 29, 2009 | Televison & Video

2 Answers

Internal led of ML350 server is glowing.......how do i resolve it?


Hi Franceso, plz specify
Is it powering ON ?
Which LED is glowing?
These leds are there on the front panel :

1 Power On/Standby button
2 System power LED
Green = Power on
Amber = System shut down, but power still applied
Off = No power

3 Internal health LED (Wave sign in BOX)
Green = Normal
Amber = System degraded. To identify the component in a degraded state, refer to system board LEDs.
Red = System critical. To identify the component in a critical state, refer to system board LEDs.
Off = Normal (when in standby mode)

4 External health LED (power supply)
Green = Normal
Amber = Power redundancy failure
Red = Critical power supply failure
5 NIC 1 activity LED Green = Network link
Flashing = Network link and activity
Off = No link to network.
6 UID LED Blue = Activated
Flashing = System remotely managed
Off = Deactivated
7 UID button

If it is Internal health led then any internal h/w issue is suspected.
If it is external health led then any power supply or power source related issue is suspected.
Also check the status of the server & its IML (Integrated Management Logs) in ilo (Integrated Lights Out ) if it is configured. (2nd RJ45 port in rear)

Also make sure the cabinet is properly closed.

Nov 18, 2008 | HP Compaq ProLiant ML350 G3 Server

1 Answer

NEC vt460


It does in fact appear to be a thermistor and the TH1 board marking seems to confirm that.
What markings are on the component (it appears to be a power transistor of some kind) adjacent to it?

If we can find a standard part number for it and you own some kind of meter, perhaps we can either eliminate or identify it as the original culprit.

The failed thermistor is either acting as a temperature sensitive clamp to prevent lamp failure or regulates lamp intensity dependent on temperature.

Maybe an email to NEC would get you the value of it (TH1) since I suspect a schematic or parts list will be hard to acquire.

Jul 01, 2008 | NEC VT460 Multimedia Projector

2 Answers

Advent model HT3251A


What is the circuit designation of the part in question? It should be marked on the board as Rxxx or FBxxx. Post that here. That should allow us to identify what it is at the very least.

Dan

May 29, 2008 | Recoton Advent Advent HT3251A TV

2 Answers

Correct Service Manual


To my knowledge there are not two versions of the SMPS for that model, but that manual might cover more than one series of that Tv... The part number for the SMPS is
E7802-004001 but if you suspect the supply of having a problem might I suggest repairing it rather than replacement..
There are about 19 caps on that board that have a delinquent history of failing. Replace those and you'll repair the supply in about 99% of the cases..
Bill

Mar 17, 2008 | Akai LCT2662 Television

1 Answer

Electronic component failure


Afraid not- Mother board are all integrated on Most computers especially Laptops- its going for a major repair or replacement.

May 13, 2007 | MSI S260 Barebone

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