ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Quick Beomaster 4400 question.
I have a square 1 ½” clear piece of plastic that fell out of my BM 4400 two years ago.
I was told it protected the on/off switch from touching “something.” My memory fails as to what.
I have the BM 4400 opened up to glue this piece back where it belongs, so where does it go please!
Jeff
Beogram 4000, Beogram 4002, Beogram 4004, Beogram 8000, Beogram 8002, Beogram 1602. Beogram 4500 CD player, B&O CDX player, Beocord 4500, Beocord 5000 T4716, Beocord 5000 T4716, Beocord 5000 T4716, Beocord 8004, Beocord 9000, Beomaster 1000, Beomaster 1600, Beomaster 2400.2, Beomaster 2400.2, Beomaster 4400, Beomaster 4500, Beolab 5000, Beomaster 5000, BeoCenter 9000. BeoSound Century, S-45.2, S-45.2, S-75, S-75, M-75, M-100, MC 120.2 speakers; B&O Illuminated Sign (with crown & red logo). B&O grey & black Illuminated Sign, B&O black Plexiglas dealer sign, B&O ash tray, B&O (Orrefors) dealer award vase, B&O Beotime Clock. Navy blue B&O baseball cap, B&O T-shirt X2, B&O black ball point pen, B&O Retail Management Binder
Hi guys,
I finally found Martin’s instructions for where this protective shield goes and once found it is clear why it was needed. The shield is now properly glued in place.
At the time Martin’s advice was given I was caught up in the misinformed rebuilding of this amplifier and the feared potential for it “bursting into flames.” I joked about my 4400 flambé and purchased a really good fire extinguisher, but I was anything but amused at the time.
Misguided repair notwithstanding, my Beomaster 4400 soldiered on for the last two+ years and it was time to stop having to be so wary with the on/off switch and replace the missing shield.
Sorry for the unneeded post, but I had the 4400 apart and being on Pacific Time, the clock was ticking if I had any hope of a response from Europe and I wanted to get the shield back ASAP.
Nice one Jeff, glad you got it sorted out. A good reminder too about the shield for others working on the 4400's. Lovely amp.
Dave.
Hi Jeff,
I had to repair my Beomaster 4400 OFF switch, because it kept producing funny noises (arcing) and smell!
It is easy to take apart, but I had to use nylon cable binders to put it back together, because if I had to open it again it would be easy to do so.
The contacts were duly cleaned (well, sanded really) but I found that reverting the toggle contact strips around - luckily they are symmetric - was a better option because the contacts were unused the other side.
However, the aforementioned plastic part (black plastic here) wouldn't fit any more
I just decided to forget about it.
Jacques
Dave Farr: Nice one Jeff, glad you got it sorted out. A good reminder too about the shield for others working on the 4400's. Lovely amp. Dave.
Hi Dave,
Thanks for the kind words.
With the inauspicious beginning I “suffered” with this Beomaster 4400, the missing shield was the least of my concerns.
However now that it has proven it has “staying power” (if a bit odd sound-wise) this 4400 deserves better than to have its circuitry fried by a too vigorous pressing of the on/off switch.
And yes Dave you are so right, this is a good reminder to anyone valuing the 4400 to make sure the protective shield is mounted in-between the switch and the circuit board.
Hey Jacques,
Always good to hear from you!!
Good move repairing that switch! Arching leads to failure….. trust me as I know from my McIntosh C-27 pre-amp. And it takes days to fully get rid of the smell….. who needs this?
While I am aware that you have forgotten more about the Beomaster 4400 than I have ever known, I feel compelled to remind you to press gentle on the on/off switch.
Since the switch is now so close as to not allow the plastic shield’s insertion, I wonder if you could get a piece of paper in the space between the switch and the circuit board?
Digressing form the original point of this post, I must say that I sorely miss the bombastic sound my 4400 makes due to speaker selection.
A situation which would be of no interest to our group forced all of my stereo gear into a new 10’ X 11’ media room and the master bedroom. Part of the net result was my rebuilt BM 2400 got the BM 4400’s S 75 speakers, which sound great.
However the BM 4400 got saddled with the MC 120.2 speakers, which have unresolved issues coupled with a pair of miserable Fisher XP-66 speakers. This combination while better than nothing is unworthy of an amplifier like the 4400.
Once it is clear if we are staying put in our house, this speaker miss-match will require attention.