RuffzGuts
Super Member
Hello again all,
Well I have finally, after completing many other projects that were in the way managed to get back to working on my Luxman L550.
When I originally obtained this amp, unfortunately the previous owner had already been in and made attempts at repairing it, so as well as the wear and tear that the operating temp does to the boards and components, the delicate pcb’s were not in good shape particularly around the main amplifier…it also had some melted wiring and many cooked capacitors…
So anyway, at this stage, all I want to do is replace what I need to in order to hopefully get it operational before going any further…
Working on this amplifier has been painfully time consuming so far, but I am sure it will be worth it in the end!
There seems to be limited supply of detailed pictures of the internals etc of the 550 so will try and document the amp as best as possible as I work through it and share Pictures here…bare in mind this may take some time as this is very much a long term project.
Ok first advice I would like to ask is regarding re applying thermal compound to both heat sink and power transistors and silicon pads…
Suggestions on what type of compound to use, and how to go about it without making a mess….
It’s going to be a fiddly job, I am in the process at the moment of replacing wiring on the main amp boards, and I can tell you, just getting these pieces back together even without thermal compound is going to be a small challenge….
As always, much appreciate any help or advice…Cheers Ruff.
Well I have finally, after completing many other projects that were in the way managed to get back to working on my Luxman L550.
When I originally obtained this amp, unfortunately the previous owner had already been in and made attempts at repairing it, so as well as the wear and tear that the operating temp does to the boards and components, the delicate pcb’s were not in good shape particularly around the main amplifier…it also had some melted wiring and many cooked capacitors…
So anyway, at this stage, all I want to do is replace what I need to in order to hopefully get it operational before going any further…
Working on this amplifier has been painfully time consuming so far, but I am sure it will be worth it in the end!
There seems to be limited supply of detailed pictures of the internals etc of the 550 so will try and document the amp as best as possible as I work through it and share Pictures here…bare in mind this may take some time as this is very much a long term project.
Ok first advice I would like to ask is regarding re applying thermal compound to both heat sink and power transistors and silicon pads…
Suggestions on what type of compound to use, and how to go about it without making a mess….
It’s going to be a fiddly job, I am in the process at the moment of replacing wiring on the main amp boards, and I can tell you, just getting these pieces back together even without thermal compound is going to be a small challenge….
As always, much appreciate any help or advice…Cheers Ruff.
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