Recent content by howsthat

I think the trick is get it up to 220 c, for about 20 seconds or so, they say bring it up to temp slowly then after move the heatgun away slowly to try to reduce the possibility of thermal shock, check out badcaps.net, some pretty sharp techs on there, my name is nomoresonys over there.

Here's a little better description for when it's the bga problem: The processor soldered to the board uses whats called BGA or ball grid array. The TV and processor get hot, then cool when turned off. Over time this heating/cooling cycle causes small cracks in the solder. These cracks are not...

Lots of reflow tutorials on youtube, correct proper fix is to reball the bga chip thats if it is the culprit. Otherwise some use a heatgun to heat the chip up, they claim it only lasts a few weeks to a few months tho, some attach fans, one guy made a hole in his back cover about where the bga...

I see a couple mainboard services on Ebay where you send them your board and they fix it for $99, looks like a few mainboards there for $150 or so also.

Mainboards can be tough to fix, usually always at least requires some soldering, you could take it out and check over the solder joints on the bottom side for cold/bad solder joints.

Try testing those pins again with the cable unhooked and power cord plugged into powerboard.

Kind of hard to tell from your test but it looks like the mainboard is not sending the power-on or drv-on signals to the powerboard.

Ok, not sure if this tv has pull-up resistors, can try a test: with power cord unplugged( is good policy to have power cord unplugged whenever unhooking any connections so nothing gets shorted accidentally) unhook cable from powerboard to mainboard, then plug the power cord back into...

Can't be positive but that symptom usually points to bad led/s or connection in backlight circuit.

Some are: on remote hit display-5-volume up-power, be careful in service mode, doing the wrong thing can brick the tv, maybe write down setting before changing so you can put them back if needed.

As always BE VERY CAREFUL when working with power supply the HOT/PRIMARY side has DEADLY voltages.

Are you trying to factory reset or enter service mode? can you describe what's wrong?

You can verify your meter working correctly by testing a 1.5 or 9 volt battery, set meter to 20 vdc and put a probe on each terminal. Test connector P201 from mainboard to powerboard on powerboard side with all boards hooked up, should be a little legend/map of pin description and expected...

Try a firmware update thru usb.

Did you try a different source? like if this is happening with the cable source maybe try a dvd or something and see if it does the same thing, sometimes a cable box gets wonky and needs to be powered all the way down and restarted.