sv7887
Topic Author
Posts: 1259
Joined: Tue May 20, 2008 7:31 pm

Advice On Soldering And Electronics Testing

Tue Aug 12, 2008 8:00 pm

Hi Everyone,
Anyone here into soldering and electronics repair? It irritates me that I am at the mercy of a dealership (auto) to troubleshoot electrical issues. I'm a big Jaguar lover and most of their owners are quite handy testing voltages, reading wiring diagrams, using multi-meters and using soldering irons to repair displays.

For example, my aged console TV just broke. I am quite certain it's the transformer that went out, but I lack the expertise to make sure. Maybe I am just too cheap, but I think I ought to be able to do simple stuff like that.

Are there any good books that would be of use?

thanks!
Sam
 
AverageUser
Posts: 1824
Joined: Tue Oct 23, 2007 6:21 pm

RE: Advice On Soldering And Electronics Testing

Wed Aug 13, 2008 8:48 pm



Quoting Sv7887 (Thread starter):
I am quite certain it's the transformer that went out

There's almost certainly a switching power supply that is connected to the live AC wall outlet voltage. I would not start doing anything with that unless you're perfectly aware of what you're doing, as you might compromise electrical safety while attempting repairs.

A basic electronics projects book, even a dated one would I think be a right thing for you to start experimenting with. Get hold of some of the classic cookbooks such as 302 Circuits, 303 circuits and so on by www.elektror.com and you wouldn't be disappointed. Parts are mostly easily available as well.
 
HT
Posts: 5864
Joined: Sat May 07, 2005 6:20 am

RE: Advice On Soldering And Electronics Testing

Wed Aug 13, 2008 9:02 pm



Quoting Sv7887 (Thread starter):
I am quite certain it's the transformer that went out, but I lack the expertise to make sure.

Do you a) want to test it to be sure that it is the transformer or b) replace the transformer ?

For a) a simple multimeter should do it (this is as long as you set ot correctly to measure voltages but not currents as yozu would produce a shortcut).

For b): If you have no expertise, stay away from the higher voltages. Start experimenting with anything battery powered (ca. 3 D-cells and smaller) and with low currents (i.e. away from a car's battery which can overheat and explode if short circuited with big enough cables - otherwise cables will simply melt or go up in flames).
-HT
Carpe diem ! Life is too short to waste your time ! Keep in mind, that today is the first day of the rest of your life !
 
MaidensGator
Posts: 848
Joined: Fri Jan 12, 2007 12:02 pm

RE: Advice On Soldering And Electronics Testing

Wed Aug 13, 2008 9:41 pm



Quoting Sv7887 (Thread starter):
For example, my aged console TV just broke. I am quite certain it's the transformer that went out, but I lack the expertise to make sure. Maybe I am just too cheap, but I think I ought to be able to do simple stuff like that.

I'd be very careful working on a TV. Many (if not all) can retain voltage in capacitors after they are unplugged, sometimes for days or weeks. You can get electrocuted if you do not properly bleed off that voltage before attempting repairs.

Electronics anymore have become throwaways. I remember when I was a kid taking vacuum tubes to the TV Repair Shop and testing them on this cool looking machine. Replace the ones that came up bad, and the TV would work like new. Now everything's relatively cheap, so it's just easier to buy new stuff when it breaks...
The first thing we do, let's kill all the lawyers.

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