Instruments/tools needed for TV repair

[tom66]

Re: Instruments/tools needed for TV repair

BK Precision just rebadge cheap crap from China - I'd avoid after seeing inside some of their analog scope offerings.

[cashkennedy]

Re: Instruments/tools needed for TV repair

Theres a oscilloscope localy on craigslist
http://batonrouge.craigslist.org/tls/3000267272.html

I probably wont get it unless someone here knows that model (BK Precision model 2125) is a really good, amazing oscilloscope.

[tibimakai]

Re: Instruments/tools needed for TV repair

That is the trace, the copper lines between components.

[stanleybaxter]

Re: Instruments/tools needed for TV repair

Main thing about soldering iron, you need 40~60 watts capacity, low wattage will not hold up the heat well when the tip make contact with what you are trying to solder, especially when you try to solder the board with large copper area, it will suck the heat from the iron and you will end up lifting the trace because you will be waiting for the temperature of the tip to recover.

What exactly is the trace? Isn't the trace the lines on the board under the green sheet that connect the components?

I have heard several times people say don't overheat the board or you'll damage the trace, but I never understood what the trace actually was.

I use a 30watt iron to desolder with a solder sucker, it works fairly well as long as I tin and clean it right before using it.

[tibimakai]

Re: Instruments/tools needed for TV repair

Thank you, I will remove them.

[tom66]

Re: Instruments/tools needed for TV repair

I have got Mike's ESR meter yesterday(Thanks Mike!) and I have measured some caps with it and I'm a bit confused.
I have measured two 1000uf capacitors and they showed like 2240uf and 0.09 ESR, that means it's bad or I'm picking up some other component's value?
(budm, I'm talking about the Vizio's PS)

If you are measuring two in parallel, you expect to get around 2000uF +/-20%. ESR will also be in parallel so the caps could have 0.18 ohms each or in the extreme 0.09 ohms and 100 ohms.) You should remove capacitors to get a definitive answer.

[S2udio]

Re: Instruments/tools needed for TV repair

If your going to spend money on ESR testers .........
Then spend a few extra quid on a small range off NEW HQ
caps for calibration of said meter ,OUT OF CIRCUIT test...its the only way you will ever know,If its Accurate !
Known Calibration is essential.
IMHO IN Circuit testing of Capacitors is a practice frought with disaster...
No matter what the blurb says !

Seems no one's mentioned A "sometimes essential tool"

Called a "SCHEMATIC"

Or you could be there for years !
Or just or just give up !

[tibimakai]

Re: Instruments/tools needed for TV repair

I have got Mike's ESR meter yesterday(Thanks Mike!) and I have measured some caps with it and I'm a bit confused.
I have measured two 1000uf capacitors and they showed like 2240uf and 0.09 ESR, that means it's bad or I'm picking up some other component's value?
(budm, I'm talking about the Vizio's PS)

[cashkennedy]

Re: Instruments/tools needed for TV repair

He probably meant to sell it for more. The guy knew how to get it calibrated so he cant be a total idiot / not know what quality it was. He also listed it as great condition and with RMS with some excalmations so seems to have known well what it was / does.

Unless there is chinese fakes or something, and the seller is scamming whoever bought it.

[tibimakai]

Re: Instruments/tools needed for TV repair

Maybe he didn't know what he is selling.
I don't mind paying more, at least I will know that nobody abused it, I have the lifetime warranty and it's brand new and tomorrow I will have it.
In my opinion if you can afford a new meter then buy the new one. Instruments are tools in which you want to trust.

[budm]

Re: Instruments/tools needed for TV repair

Is that for real? How can it go for that low?

[retiredcaps]

Re: Instruments/tools needed for TV repair

UNBELIEVABLE!!!! $20 sold for working Fluke 87V.

http://www.ebay.com/itm/330725073380

If the seller meant $200, I wonder if he HAS to sell it for $20?

[Jasgriff]

Re: Instruments/tools needed for TV repair

It was $100 when you posted, but ended at $152.50.

I thought that it might creep up in price.

I would love to get hold of the fluke 87v next. I'm pretty sure I should really be looking at an oscilloscope before buying a second fluke multi meter though.

[retiredcaps]

Re: Instruments/tools needed for TV repair

I'm looking at the Weller WESD51,

http://www.eevblog.com/forum/product...ering-station/

[budm]

Re: Instruments/tools needed for TV repair

I use 2.6~3mm tip for de-soldering as well on my good old Weller soldering station.

[retiredcaps]

Re: Instruments/tools needed for TV repair

I have a 1.6mm not a 2.6mm.

Start at 28:26 into this video and see how the tip size makes a difference.

http://www.eevblog.com/2011/07/02/ee...torial-part-2/

[tibimakai]

Re: Instruments/tools needed for TV repair

I have a 1.6mm not a 2.6mm.

[tibimakai]

Re: Instruments/tools needed for TV repair

So that is my problem, that I'm using a to small tip? If I remember well I'm using a 2.6mm one.
I will get one and try it out before I get another station. At work we have an old Weller and with that I can unsolder anything with a sharp pointy tip.

[retiredcaps]

Re: Instruments/tools needed for TV repair

I have purchased the Kendall 899D

http://danshardware.wordpress.com/20...l-899d-review/

Did you get these?

http://danshardware.files.wordpress....2-21-41-42.jpg

If yes, use the bigger tips for desoldering.

[retiredcaps]

Re: Instruments/tools needed for TV repair

That fluke is looking like it will go cheap.

It was $100 when you posted, but ended at $152.50.