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That appears to be a burnt power transistor.
You would perhaps not be able to repair it even if you have the skill as the part number of the burnt component would not be easy to find.
However I suggest you buy the whole board LC320EXJ-SEE1 from eBay - US$22 to $60
However, note this same part is used by most tv manufactures hence you need to certain on compatibility, warranty and source (new/used).
A FL-4 error is an ignitor failure. There are three things that need to be checked to correct the issue. First is the ignitor. Replace if broken or burnt or cracked. Second is the 220/120 vac conversion plug that is plugged into the main board in the burner compartment behind the box cover. The black transistor may be burnt. Replace if burnt. This will happen often if the heater is connected with 220 vac power source. I highly recommend connecting to a 120 vac source if possible. The heater seems to like it more. But remember when switching power supplies to follow all manufacturers instructions on doing so. If after replacing these two items the FL-4 problem still occurs, the control board in which the conversion plug plugs into also may need replacement. This should correct the fl4 error.
Hi , Has your MB Sufferd any power Surges , Power Trips , or Shorting with Case of some sort? if so then your Motherboard is Burnt out , Try see if you can see any burnt marks , or Burst Capacitors .As soon as your CPU Fan runs , but your MB isnt running , you know its getting power ..So your motherboard is Burnt out, ASUS boards are very commonly , Burning out.I recently Sent mine back to ASUS because it burnt out..Also if you are going to take it in , make sure you have a proper qaulified Techie Checking it , otherwise they report that your CPU and PSU is also burnt out , and try get you to buy new from them...Becareful of that , its very common where im from.
If the fuses are good , this could still be a prob with amp, check spkrs with a ohmeter(cheap one from the Shack or anyplace) by touching both leads to spkr terminals, disconnect spkrs first.Have ohmeter set to ohms Rx1 and you Test amp out put by connecting two spkrs that you know are good. Good luck and please rate this answer,thanks.
R466 is chip resistor 220 Ohms 1/8 watt connecting between Emitter pins of Q408 and Q409. Its part number is ... R466 "1-216-182-00" RES-CHIP 220 5% 1/8W Available in Part Store. Let me know if you need further info.
This worry's me a little I have some ?'s that i need answered first before you started your cleaning did you ground your self and wait the 10 to 20 min time after you shut-off and unplug the computer before removing anything from the computer. If you did then before turning it back on did you make sure you replace everything in it right place. Sound to me like ram my have not been in all the way.
But it all comes down to one thing you need a new motherboard they really normaly don't make replacement parts for them and in the long run you don't know what else could be toasted.Most likely the bios chip went too.
I'm not familiar with that particular amp but generally, the only transistors that burn are the ones in the power supply. If the adjacent transistors had numbers like IRFZ44, IRF3205 or similar, the burned transistor is likely the same as the ones next to it.
Confirm that the center and right-most leg of the burned transistor and the transistor next to it are directly connected by large traces on the circuit board. Also confirm that the center leg goes to the large windings of the power transformer. If it passes these tests, the transistor is one of the power supply FETs. The numbers on the adjacent (parallel connected) parts will be the same as the burned one.