Why no power supply schematics?

[paulstef]

I wonder why in most service manuals they don't include the power supply schematics.

They often include the mainboard which is most of the times so complex people refrain from repairing it.

A power supply board however is repairable, and could often be MUCH more easily repaired if we had the schematics.

Why provide a service/training manual in the first place (supposedly to enable you to repair it) and then only put half of the information in it?

Do certfied repair shops have access to more info from the manufacturer?

I'm still stuck with my EAY60968801...

[eccerr0r]

Re: Why no power supply schematics?

Usually the PSU was designed by a third party and they themselves may not be able to distributed them under NDA *shrug*
Be thankful the board is still repairable, until the day the board looks like one big IC on it and nothing else...

Oh and also could be liability issue, PSU repair can be dangerous...

[paulstef]

Re: Why no power supply schematics?

Usually the PSU was designed by a third party and they themselves may not be able to distributed them under NDA *shrug*
Be thankful the board is still repairable, until the day the board looks like one big IC on it and nothing else...

Well it IS repairable but sometimes it takes forever. :-)

That's what I thought, third party. Makes sense....

[Ltank]

Re: Why no power supply schematics?

Manufacturer does not want boards repaired. They want you to buy a new board or new TV. I have bought service manuals online then discovered that no schematic 's were included. I was ticked off. Most parts are generally available.