Onida model:co21blftag smpsservice manual i need

I also find out about this, hoping to find the best answer!
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Most likely a fuse.

the likely fault is a failed start/run capacitor
with this unit failed the field windings draw excessive current which pops the fuse

If it's not the main board that's causing the fuse to blow then you have a short circuit somewhere in the power supply. Check things like the electrolytic capacitors. The ones that look like little cans. They should all have flat tops. If any are bulging out at the top they will need replacing. Also check the bridge rectifier which is a black component usually standing up on the board with four legs. If there is no bridge rectifier there will be 4 rectifier diodes together. They are black cylindrical items with a sliver band on one end and a lead out of each end. They are usually located near to where the mains lead enters the power board. Other things to check are power transistors, they are usually 3 legged, (sometimes 2 legs if they are used as a diode) black items with their case fixed to a heat sink (aluminium block.)

onida 21 oxygen 300 service menu code

press disp+vsm together here it opens service menu at last of that menu there is restore option press 1 to INT . press 1 and your tv will restore.

i want enter password for Onida TV for all models

ONIDA826 SUPPLYDO NOT PASSED FROM CAPACITOR TO STANDBY LED