Jeez........ Need to go clean my glasses............
In a moment..... Have some editing to do here. 😆
Thanks @Netlist ........ About time for a bigger screen now.
Is the cracking sound present only during startup or all the time when listening?
Replacing the small caps has resolved the issue, just about to recap the other one .
Looking at photos of other genesis monoblocks online the transistors are all the same as mine ( soldered legs ) so yes I think you are correct in that the manufacturers did this to extend the legs .
The left mono is identical too .
Only upon start up , replacing the small caps has fixed the issue.
These amps sound wonderful so worth any effort imo .
Way to go, man........... Great job 👍
Remember to post about the channel imbalance afterwords.
And be sure, the imbalance doesn´t come from the preamp (easy to swap channels to check) 😉
Check, if the left mono has identical BD249´s as the right one.
If so, the manufacturer at the time could have had trouble in sourcing TIP35 and went for BD249 instead.
Nothing to worry about. They are identical.
Wow........ They really saved a few pennies there.
Be more generous when replacing that paste 👍
Yes, that's not how it should be done. You can see that the metal has only made contact on the sides.
Make sure both surfaces are as clean and smooth as possible, especially around the drilled holes.
I would even drill a third hole in the center, somewhere between two transistors, to fit a third screw, if you have the tools.
Make sure both surfaces are as clean and smooth as possible, especially around the drilled holes.
I would even drill a third hole in the center, somewhere between two transistors, to fit a third screw, if you have the tools.
If you can get graphite sheets, these are the very best for this application:
https://nl.farnell.com/intelligent-...0-2a/heat-sink-pads-graphite-sheet/dp/3702712
But you need to keep the isolators between the transistors and heatsink.
https://nl.farnell.com/intelligent-...0-2a/heat-sink-pads-graphite-sheet/dp/3702712
But you need to keep the isolators between the transistors and heatsink.
I see and agree with what you’re saying trouble is the fins of the heatsink are bang in the middle which as an alternative would mean 2 screws either side of the fins which then means 4 screws ( top and bottom) so probably a cost cutting exercise.
Great, if you don't notice a huge difference in temperature between the heatsinks and the alu block, all will be fine.
Well done!
Well done!
Good point , I will give them a few hours to heat up then test the temperature differences . Cheers
I’m fully aware that the subject of replacing capacitors draws many a heated discussion ( surely this repair/result proves it ) but should I now replace the power supply caps too ? Though I must say that in my humble experience it’s usually the little caps that go bad .