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how can i fix my tv (technika lcd32-407B )?

hi i have problem,when first plugged in my tv
will not turn on and the red on standby light will not iluminate.but after a hour or so the standby light comes on ,after that the tv will function perfect for as long as it is connected to the electric.
when it is disconnected form electric i have to do the same process again. i have replaced capacitors C501, 503, 504, 506, 507 & 509 on the PSU pcb , and it will now switch on within 5 mins
can you tell what other items my need replacing?
bob brazil, September 2011
ok ,thanks for your help

bob brazil, September 2011
On something like that, I would not be looking for what needs replacing, as to what is not soldered in correctly, seems to be that after time, it would slowly warm up, closing the bad connection. I would check for bad connections on the solder print, again all on the power pcb, If you can take some voltage measurements, track the voltage through the pcb. Other wise, probably cheaper to replace the board, rather than all the components

SD, September 2011