You need alot of courage to disassemble/kill one Arc4+. :sweat:
If you look at the second picture, it is the 'can' that you want to remove. Look again closely, you can see groove under the PCB(printed circuit board) hole. You will need a removal tool, something similiar to the needle nose plier shown in the first image. However it is
not a suitable tool.
:thinking: Best tool is a custom made tool that not only go through the PCB holes but also fits nicely in to the 'can' grooves.
If you use a needle nose plier, make sure that you are applying force on to the 'can' instead of the PCB. There's a high possiblility of ripping off the top PCB with unsuitable tools. The 'can' wall is very thin, you can slip while turning you won't know it because the PCB is there to hold your tool so check often that you are in the grooves instead of the PCB.
You want to unscrew the 'can' not the PCB.
Not shown in above images, the sandwich is connected via numerous jumper pins. The inductor was ripped off and pending repairs.
ullhair: The luxeon is attached with only thermal paste. The whole 'can' is covered/filled with very thick thermal paste, it was a tough job cleaning it without proper cleaning agent.
I heated the head and did many mistakes. I would say I am two? times lucky. I had a few components ripped off but they can be soldered back. Disassembly without the knowledge of construction leads to a risky result.
The 'can' and sandwich is pot with epoxy. I used brutal ways to remove the pcb. I wouldn't have any idea to remove it in a proper job. :thinking: I had to boil the pcb to scratch off all the epoxy. The epoxy becomes soft and flexible like hard rubber once heated. It can then be 'skinned' off from the circuit board while it sits in the boiling water. You have to be wearing gloves or turn off the heat if not you can have steamed fingers for dinner
vince.
