Hi all.
OK. So here's the story.
1. I have 2 Braun Regie 550 receivers. I am a total sucker for these receivers, and I LOVE their performance and looks. I have the tape deck also, and now all I need is the turntable...ok that's another story.
2. One of them just decided to go into protection. Immediately upon turning on, the protection relay does not click, and of course, there is no sound at all now.
3. Before this, it was having a loud hum on all inputs. I replaced the filter caps (the big silver ones, or coupling caps?) in the power supply.
4. The hum went down a lot. But there was hum still in the phono -- engaging the phono stage gives a loud enough hum at just the 9o'clock position on volume. The hum increased with volume.
5. Very soon, the protection relay refused to click and the receiver has no sound at all.
6. The second Braun receiver has some loud scratchiness in the volume/bass/treble controls....Deoxited a couple of times. Still scratchy. Don't know if it needs anything more.
I am not very good at schematic reading, and would like to know if anyone wants to take on the project of fixing this, and doing a proper recapping of old caps.
** Schematic attached
** Service manual attached.
If anyone has ideas about possible issues I should look at, that is also something I am happy to try. Of course, I don't have any equipment to check amplifier bias and such.
Thanks for reading! Comments welcome!
OK. So here's the story.
1. I have 2 Braun Regie 550 receivers. I am a total sucker for these receivers, and I LOVE their performance and looks. I have the tape deck also, and now all I need is the turntable...ok that's another story.
2. One of them just decided to go into protection. Immediately upon turning on, the protection relay does not click, and of course, there is no sound at all now.
3. Before this, it was having a loud hum on all inputs. I replaced the filter caps (the big silver ones, or coupling caps?) in the power supply.
4. The hum went down a lot. But there was hum still in the phono -- engaging the phono stage gives a loud enough hum at just the 9o'clock position on volume. The hum increased with volume.
5. Very soon, the protection relay refused to click and the receiver has no sound at all.
6. The second Braun receiver has some loud scratchiness in the volume/bass/treble controls....Deoxited a couple of times. Still scratchy. Don't know if it needs anything more.
I am not very good at schematic reading, and would like to know if anyone wants to take on the project of fixing this, and doing a proper recapping of old caps.
** Schematic attached
** Service manual attached.
If anyone has ideas about possible issues I should look at, that is also something I am happy to try. Of course, I don't have any equipment to check amplifier bias and such.
Thanks for reading! Comments welcome!