One day when my nad t562 dvd
player was only about 18 months old, a component that looks like a
large resistor on my power supply board scorched the board and the capacitor
next to it. i didn't have a proof of purchase, so i didn't pursue
warranty repair. now that i know how to solder, i'm wondering how i
determine exactly what the parts are and if i can replace them on the
board, or if i need a new board and where i might get it. i have not
heard back from nad tech support. i can send photos.
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Check the rectifier diodes in the power supply for shorts and look at all the filter capacitors in the power supply. Look for puffy discolored and domed tops. All filter capacitors must have flat tops. Check the windings of the transformer for darkened or burnt spots and test for shorts in both the primary and secondary windings
well..this is one for the books. Can you tell me what the ratings are between the 252 and the 752 impedance matching wise? even though it might work sometimes, impedance matching can wreak havoc between mismatched amps.
To reset it to factory settings, you have to enter its Service Mode option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.
Tries unplug,replug it back like an hour later.Letting the DVD player resetting itself back to the factory setting.Tries it than,see if it work than.Not,than tries hook it up with the RCA component cable Y,R,W.If still have the same problems,the PCB in the DVD player is bad.Not worth repairing.Trash it.DVD players are very cheap these days.U can get a brand new one like for $40 dollars.
I would replace the capacitor first and check the resistor with an ohms meter to see if it has changed in value(gone high). remounting the resistor (you may have to replace it also to do this with longer leads) to be clear the Pcb and also the capacitor to be as far away from the resistor as a heat source also may help. Darkening of the board is not uncommon where there are power components. Having said that, it should not generally happen in the first place... but it often does. Power supply failures in modern gear relates to heat stress so often. Capacitors failing from this overheating is the biggest problem of all. In the workshop, where we suspect that caps have failed, we generally replace them all, and always use good brand name 105deg rated devices(Rubycon or Nichicon brands i prefer) to help minimise the recurrence of failure. You can order them from Farnell in most countries of the world. If you cannot identify the values of the components, I am happy to try and help you here. Please feel free to ask any questions you may have. FixYa rating is the best way to thank me for helping you out. Cheers
That's exactly the same problem as I have, any suggestions would be greatly appreciated. Used to solve it by turning off at the plug and restarting. Now won't load up at all though. I love the machine - when it works - it just isn't very often!
What your husband is doing appears to be the right approach. Looks like the CD was not inserted properly and must've gone out of its seating and preveting the door from opening. Just pusing the CD back to position should take care of it.