All brands fail or need refreshing eventually.
The few I mentioned I refuse to work on and all suffer from;
Tracks lifting of the board.
Boards that delaminate.
Cheap parts that fail when they shouldn't.
Phenolic boards that absorb moisture, bow, crack, become conductive.
Poor design where you have to deconstruct the entire unit to the literal very last screw to access one small board.
Proprietary parts that fail (regularly) and can't be obtained as the maker can't supply as the unit is more than 5 years old.
The list goes on.
If something is designed properly, both electrically and mechanically, it is a joy to work on.
There are quite a few.
But they are getting rarer.
The few I mentioned I refuse to work on and all suffer from;
Tracks lifting of the board.
Boards that delaminate.
Cheap parts that fail when they shouldn't.
Phenolic boards that absorb moisture, bow, crack, become conductive.
Poor design where you have to deconstruct the entire unit to the literal very last screw to access one small board.
Proprietary parts that fail (regularly) and can't be obtained as the maker can't supply as the unit is more than 5 years old.
The list goes on.
If something is designed properly, both electrically and mechanically, it is a joy to work on.
There are quite a few.
But they are getting rarer.
ahaha, phenolic boads that also bond as the one of this thread and smell acid like hell (oh we breath that when in the room, omg... health is precious).
what to say also if you look at the pictures of this thread about all these aluminium leads straps everywhere instead of a two side board...
I'm not tech so don't know where things arm more than other on a board (like my asking about ceramic discs, poalrized caps in the interstages, etc, etc) all I can say is when the device sounds bad or not to my ears... For instance I can see often sme Hafler on repair benchs but it sounds good to me and is often an amp I advice to friends for a good Q/P... there of course should be tons of good amps one like I are not aware of... we just don't know when it's not your job or main interest center.
what to say also if you look at the pictures of this thread about all these aluminium leads straps everywhere instead of a two side board...
I'm not tech so don't know where things arm more than other on a board (like my asking about ceramic discs, poalrized caps in the interstages, etc, etc) all I can say is when the device sounds bad or not to my ears... For instance I can see often sme Hafler on repair benchs but it sounds good to me and is often an amp I advice to friends for a good Q/P... there of course should be tons of good amps one like I are not aware of... we just don't know when it's not your job or main interest center.