First... the 1st 3 3 responders might desire to be slapped! the only reason to be so rude and unfavourable is to make oneself sense significant at somebody else's fee. specific, you made some errors and you already be attentive to that. So... as quickly as you get sparks and heat temperature it potential something is shorted. in distinctive words, you have have been given 2 or greater suitable products of steel touching one yet yet another that would desire to no longer be touching. perhaps some solder have been given into places this is going to now no longer be or perhaps the unique potential surge melted insulation and allowed the touching. as quickly as you're specific you in fact see sparks around the capacitor you in fact replaced, my first wager might desire to be solder overlap or perhaps you place the capacitor leads interior the incorrect holes. As responder 4 reported, seem for burned or melted insulation (varnish in coils, rubber/plastic on wires) and seem for wires, solder or distinctive bits and products that would desire to no longer be touching. additionally, determine which you place the warm capacitor wires of their suited places. subject concerns like capacitors, transistors, diodes, and so on. have polarities (style of like a front and draw back) and can be oriented stable. seem for the valuable lead mark (or learn the previous one and journey the warm one to it) and be sure it is going interior the valuable place, which potential an identical hollow the previous one replaced into in. As for the guy who stated potential factors are deadly...it particularly is basically certainly in the event that they're plugged in or...and that's quite significant!... if there's a capacitor that keeps to be protecting a value sufficiently massive to harm you. Capacitors are electric powered storage contraptions and can desire to, like a battery, carry a value for an prolonged time (even jointly as the potential is grew to alter into off) till finally they're discharged. are no longer getting your physique areas interior the way of that discharge. Now, as responder 4 stated, get your magnifying glass and learn those areas and connections.