Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
MY Bad, this set is a 22 inch LED tv and monitor, no ccfl. But as a follow up? This set is powered by an external 14v dc supply (measured at 14.26 v). Before I BREAK open the welded case can anyone suggest the acceptable ripple on that output and do you think any main board components would cause (no turn on) if ripple is too high.
I have found service manual for this Samsung chassis U86B,and of course NO schematic. It does have some troubleshooting info and I NEED some assistance with the nomenclature used.
A power tree diagram mentions supplies of "A5v_PW and B5v_PW" I assume 5 volts but don't know about the A or B or PW and neither one is anywhere near a PWM source.
There are several mentions of "SW_Power", what does SW mean?
On silkscreen on PCB parts are labeled as "Qxxxx_AD or Qxxxx_JT or Rxxxx_PC"
What does AD,JT,or PC mean.