REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday, 8 April 2020

CAPACITOR TYPE ON LAPTOP MOTHERBOARD


Capacitor (originally known as a condenser) is a passive two-terminal electrical component used to store energy electrostatically in an electric field. The forms of practical capacitors vary widely, but all contain at least two electrical conductors separated by a dielectric (insulator); for example, one common construction consists of metal foils separated by a thin layer of insulating film. Capacitors are widely used as parts of electrical circuits in many common electrical devices.
Capacitor is basically divided into 2 parts: 
Capacitors Polar and Bipolar/non polar .
They work on different way.Polar capacitor has a positive pole and a negative pole. The installation should not be reversed.
Non-polar capacitor does not have the positive pole or negative pole. Indiscriminate installation. The legs of the capacitor may be mounted upside down on the pole voltage.
Testing this Polar Caps if there is continuity between their pin  it mean capacitors short and testing bipolar with no pin connected to the ground ,  if there is continuity it's mean GOOD.no need to pull them up from circuit ,test on circuit with avometer buzzer continuity.


This Polar capacitors become biggest cause of short on circuit.a little cracks due over heat could make positive and negative poles together.Pay attention to bipolar capacitor if they put on polar line  they will be a polar function on circuit.
Capacitor Polar stored energy electrostatically and to be come energy reserves when power spike coming .Boot strap device have a big spike such as processor and graphic chip power.adding some more capacitor on VCCORE and VCCP power are alternated to avoid power spike
.Running on low power caused boot up process fail.


Look at the schema Symbol Capacitor is C or PC .Location code mark as PC85 .find on circuit same Location code for actual position on circuit .PC72 is Bipolar capacitor and function as voltage filter or coupling.