tel1958

Hi, You can use a weak solution of sodium hydroxide (Caustic Soda). The water/caustic mix depends on the strength of the sodium hydroxide you buy. I use an Oven type cleaner called KLEENOFF, mix about one teaspoon per pint of warm water. works for me.

Hi, If you care to post the model number of the TV & the reference of the suspect diode (ie D1, D12 etc) I may be able to tell you what the device is.

Whoa, check first if it is SWG or AWG they are different thicknesses, hence different resistance.

Hi, If u post the circuit, maybe we can help, but if it is just the Led driver almost any General purpose NPN or PNP transistor will do.