pls help me/.... singer dvd player no power

i checked

dry solder

replace 7805c

but same

Is there a fuse?

dilan silva said:

i checked

dry solder

replace 7805c

but same

Click to expand...

what is the device? ---- full make and model
where are pictures/ schematics? --- have you googled for a service manual ?
why do you think its not working? ---- ie. what fault symptoms is it showing ?
when did it stop working? ---- eg. during a thunderstorm or a power cut ?
how have you tested it so far? --- even basic tests -- fuses, Low voltage DC rails tests

Dave

dilan silva said:

i checked

dry solder

replace 7805c

but same

Click to expand...

Singer.... as in sewing machines????? sounds like an "off brand", and the time you've expended is worth more than the cost of a new one.... but anyway, what's the symptom? is it dead? does it not read disks? if it is an off brand, and the OEM cost is less than $50.00US, then there may be no service manual, because the player is meant to be DX (direct exchanged) by the retailer if it fails under warranty, rather than repaired. this would also mean that the manufacturer doesn't provide repair parts (drive, boards, etc...)

this set is dead

no any reaction

singer set ... but i think this is part by part assembled one not original singer

What voltages do you have at the regulater?

More likely this unit has a switching power supply circuit and if that is the case it may have a capacitor go bad. I have seen this a lot on other models.