Neighbor Was Gonna Junk It.. Back Light Issue..
I Saved Him dump Fees Brought it Home.
Seemed that On Initial Start All the Back Lights Worked then went to only a Strip in the Middle.
Disassemble.. Check Connectors Good..
Turn On With back Off Witness All LED Holes int he Back Light for 3-5 or so Seconds Then Down to Center Only.
Take Voltages
Odd Ball Was On Pin 6 of the LED Connector..
Remove Pin 6 all Other Back Lights Work.. Hook Up pin 6 or that LED Channel /Array down to Just that Strip Working and Knocks out the other 3?
Swap LED's Arrays Again With Pin 6 Hooked Up get a Different Bar Of Working LED's but shuts down the other 3.. Leave The Channel / Array Disconnected and it is Watchable With 3 Channels / Arrays Going.
Looks Like a Little Burn Under QD30 9477 Mosfet? A Used LED Driver Is $20.00 or so on Fee-bay.
Could there be Something in the LED Array that can cause it to fail? I Cannot find a Source for the 9477? Anyone know? Search Mouser, Digikey, Etc.. Surface Mount Soldering and Reflow is Not an Issue I have a Decent Bench. Not in to reworking led drivers so not sure if worth reworking or just replacing with a used one? I am way out of Practice / Knowledge on these modern items hahaha... In any Case will work as a Great Garage/Shop/Security TV to Fill The Cabinet Void.. Wonder If i Could Combine the Strip to another Channel or would it draw to many amps?
My Small Work Bench.
Shop Cabinet Void
Shop Other Side..
I Saved Him dump Fees Brought it Home.
Seemed that On Initial Start All the Back Lights Worked then went to only a Strip in the Middle.
Disassemble.. Check Connectors Good..
Turn On With back Off Witness All LED Holes int he Back Light for 3-5 or so Seconds Then Down to Center Only.
Take Voltages
Odd Ball Was On Pin 6 of the LED Connector..
Remove Pin 6 all Other Back Lights Work.. Hook Up pin 6 or that LED Channel /Array down to Just that Strip Working and Knocks out the other 3?
Swap LED's Arrays Again With Pin 6 Hooked Up get a Different Bar Of Working LED's but shuts down the other 3.. Leave The Channel / Array Disconnected and it is Watchable With 3 Channels / Arrays Going.
Looks Like a Little Burn Under QD30 9477 Mosfet? A Used LED Driver Is $20.00 or so on Fee-bay.
Could there be Something in the LED Array that can cause it to fail? I Cannot find a Source for the 9477? Anyone know? Search Mouser, Digikey, Etc.. Surface Mount Soldering and Reflow is Not an Issue I have a Decent Bench. Not in to reworking led drivers so not sure if worth reworking or just replacing with a used one? I am way out of Practice / Knowledge on these modern items hahaha... In any Case will work as a Great Garage/Shop/Security TV to Fill The Cabinet Void.. Wonder If i Could Combine the Strip to another Channel or would it draw to many amps?
My Small Work Bench.
Shop Cabinet Void
Shop Other Side..
Comment