Thanks alot for the info. Will repost after sucess or failure.
Another point I would like to make concerns the workmanship on that PowerNet sub board and that is the workmanship on the soldering job.
Put the board under a 30X microscope and most of the solder joints are cold and crystallized. some had very little solder on them. It reminds of the output of sodlering class for beginners.
Any way I have two Samsung 940BX monitors that are dead. The culprits are the two PWI1704SV switch controllers. Unsoldered them and found two smt devices on both boards that are completely open. They are marked RA4 and RA6. Can't find a source for the sub board nor the transistors.
I can replace the enitre IP board with the identicals on Ebay for $23 ea. + shipping and about 3-5 week lead time.
Further research into the availablity of proper schematic and parts list documentation came up with so much confounding garbage that...
Strange! I posted a reply but for some reason it disappeared
Thanks for the try retiredcaps
I'll start again but I'll make it much shorter. Tried that website but it was no help. There are two sites I found that want 18 to 20 bucks for a manual and that's not a guarantee the manuals are complete. FSM Samsung manuals don't have any details at all about the I/P.
Repairing without schematics (been there done that for more years than I can remember) is ok for shotgun trouble shooting but getting to the nitty gritty...
Got an HP 1740 with the exact board playman posted the pics on. Need the schematic for 48.L1G02.A01 Benq board. That rev number at the end makes all the difference as there are subtle difference between rev numbers.. The schematics and board layouts and component designated numbers are different. Does anyone know where I can get the correct schematic and board layouts? Thank you
Re: New Members - please post your introductions here
Well hi y'all. My name is Frank, 74 years old and repaired my first radio when I was 12 and my first TV when 14. Lived in the world of electronics all these years, was a Metrology technician, working my way up to department manager in a large systems manufacturing company. Owned and operated an FAA certified avionics repair business worked for a large company as an avionics engineer repairing communication, naviagation and weather radar equipment until I slipped off a ladder while up on the wing of a plane and busted up my arm....
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