Which soldering iron to repair TV? New capacitors?

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Tarambor wrote: »

I'd go for a higher rated iron than 15-30W so you're applying the heat for less time to melt the solder which reduces the chance of lifting the pads off the PCB. The lower the wattage the longer you end up having to leave the tip on the solder for it to melt through.

... And do not get an Iron with a pencil point like 1mm one. Get a 5mm-ish one, as the tip acts as heat reservoir, and as soon as you touch the copper board or component, the heat spreads from the tip to that component and the temperature drops and the element kicks in. If the component heat conduction is too large, the solder starts to solidify, and you also end up what is described above quote too.

Then there is freezer spray, to freeze components. Most components you can eventually freeze enough so it stops working even though it is fault free. Then there is the hair dryer, and as that freezer spray can make a component looks bad, so can he hair dryer - all about moderation

If that LED display has florescent tubes then it may have an inverter, which when the contacts are touched will make you say words not often found in most dictionaries. Also be aware of the switch mode power supply as they can supply very high and dangerous voltages, before they are converted..

FestiveJoy

esuhl wrote: »

I have an old temperamental TV that won't turn on unless the room is heated to 21C or above.

There are about four capacitors on the circuit-board that have blown, so I thought there's a good chance that replacing them will fix the problem.

I've never done anything like this before, so I was wondering if someone could recommend a soldering iron? It'll really just be for this one job, so I don't need anything fancy or durable.

I presume the capacitors will have their specifications printed on the side, so I can just buy identical replacements...? Is there anything else I should know before attempting a repair?


Cheers :-)

I'd suggest you use one of these. Nothing fancy as you requested.



Perhaps include on on Santa's list ...

:xmassign:

that

^^ above pic.... I have actually used one :eek:

the flux was a big-ish solid bock of sal ammoniac

Did not use it on electronics though