Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 5 1 2 3 4 5
Re: My Rotel RB-1080 lest channel died
michael_d #414005 08/10/15 01:06 PM
Joined: Jul 2004
Posts: 4,342
Likes: 7
M
connoisseur
OP Offline
connoisseur
M
Joined: Jul 2004
Posts: 4,342
Likes: 7
Some kind of junction for the four round things under it, I reckon. I haven't a clue what 98% of the stuff inside this thing is..... Sure is built stout though. Nothing flimsy or cheap in this sucker.

Re: My Rotel RB-1080 lest channel died
michael_d #414006 08/10/15 02:26 PM
Joined: Jan 2011
Posts: 1,291
J
connoisseur
Offline
connoisseur
J
Joined: Jan 2011
Posts: 1,291
the round things are large capacitors, and the plate on top seems to be connectors (+ -)

Re: My Rotel RB-1080 lest channel died
michael_d #414008 08/10/15 08:02 PM
Joined: Jun 2003
Posts: 6,832
W
Wid Offline
axiomite
Offline
axiomite
W
Joined: Jun 2003
Posts: 6,832

Is it back in service Mike?


Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud

Re: My Rotel RB-1080 lest channel died
michael_d #414011 08/10/15 11:47 PM
Joined: Sep 2004
Posts: 5,422
axiomite
Offline
axiomite
Joined: Sep 2004
Posts: 5,422
You are forgetting to add the Rotel to your Rotel... That will fix everything.



I would stay away from the HOT one though as it can cause overheating.


Farewell - June 4, 2020
Re: My Rotel RB-1080 lest channel died
michael_d #414013 08/11/15 12:48 AM
Joined: Jan 2007
Posts: 9,040
Likes: 47
M
axiomite
Offline
axiomite
M
Joined: Jan 2007
Posts: 9,040
Likes: 47
Silly me. I didn't see the caps underneath the plate.


Proprietor - House of the Rising Sone
Re: My Rotel RB-1080 lest channel died
Wid #414022 08/11/15 01:55 PM
Joined: Jul 2004
Posts: 4,342
Likes: 7
M
connoisseur
OP Offline
connoisseur
M
Joined: Jul 2004
Posts: 4,342
Likes: 7
Originally Posted By Wid

Is it back in service Mike?


Need to find a fuse. Work and all keeps interfering with my business hours shopping....

Re: My Rotel RB-1080 lest channel died
michael_d #414024 08/11/15 02:32 PM
Joined: Jul 2005
Posts: 738
aficionado
Offline
aficionado
Joined: Jul 2005
Posts: 738
I think you can buy them online.

Here are some "high end" fuses. Supposed to make a difference.

Not in a million years will I believe that a fuse will improve the sound of your system, but hey, some people sware by them.

www.element-acoustics.ca/products.php?cid=7&sid=25


paul

Axiom M80, VP180, Qs8, EP500
Epson 3020
Rotel RB-880
Denon AVR-990
Re: My Rotel RB-1080 lest channel died
michael_d #414025 08/11/15 02:35 PM
Joined: Dec 2001
Posts: 333
Likes: 4
Axiom Engineer
devotee
Offline
Axiom Engineer
devotee
Joined: Dec 2001
Posts: 333
Likes: 4
Originally Posted By michael_d
It is a fuse... I can't find anything that looks like it got hot. No burnt smell anywhere. I need to find a fuse now. Fuse holder is to the left and above of where it is standing on end.




Michael, can you take a close-up of one of those blue capacitors (the big cylinders) on the amp board? In your second photo it looks like there is some black stuff where it meets the PCB. Rotel, or more likely their 3rd party manufacturer, used a corrosive glue under these capacitors which will leech out over time and start to damage the parts around them. The blown fuse might suggest that some corrective action is required.

Re: My Rotel RB-1080 lest channel died
Mojo #414026 08/11/15 02:38 PM
Joined: Dec 2001
Posts: 333
Likes: 4
Axiom Engineer
devotee
Offline
Axiom Engineer
devotee
Joined: Dec 2001
Posts: 333
Likes: 4
Originally Posted By Mojo
What's that gold plate in the middle?


That gold plate is likely a piece of plated copper. It is the central "star" ground point for the amplifier, and all ground returns (transformer centre-tap, safety earth, main power supply capacitors, amplifier PCB, input stage PCB, speaker negatives) will all connect to this bus plate.

Re: My Rotel RB-1080 lest channel died
Andrew #414038 08/12/15 01:57 AM
Joined: Jan 2007
Posts: 9,040
Likes: 47
M
axiomite
Offline
axiomite
M
Joined: Jan 2007
Posts: 9,040
Likes: 47
Originally Posted By Andrew
Originally Posted By Mojo
What's that gold plate in the middle?


That gold plate is likely a piece of plated copper. It is the central "star" ground point for the amplifier, and all ground returns (transformer centre-tap, safety earth, main power supply capacitors, amplifier PCB, input stage PCB, speaker negatives) will all connect to this bus plate.


Indeed. It must be nice not to have to worry about fast transients, surges and ring waves on I/O in audio. Then you can get away with a pseudo star ground.


Proprietor - House of the Rising Sone
Page 2 of 5 1 2 3 4 5

Moderated by  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Link Copied to Clipboard

Need Help Graphic

Forum Statistics
Forums16
Topics24,584
Posts436,634
Members15,471
Most Online2,082
Jan 22nd, 2020
Top Posters
Ken.C 18,044
pmbuko 16,437
SirQuack 13,733
CV 11,953
MarkSJohnson 11,451
Who's Online Now
0 members (), 77 guests, and 2 robots.
Key: Admin, Global Mod, Mod
Newsletter Signup
Powered by UBB.threads™ PHP Forum Software 7.7.4