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  • Re: BeoMaster 5500 - A hot topic!

    Thanks Søren! Well, at just short of 20 years of age, I would describe myself as young, but that kind of sound is definitely not for me! But yes, sadly the majority of the young people don't seem to care much about sound quality... Was able to turn the volume further up today and it sounds good! And the heat sink doesn't get more than lukewarm even after playing at high volume for a while, so everything seems to be as it should. Getting good radio reception as well. Display board has
    Posted to The Workbench (Forum) by Dennis on Sun, Feb 21 2016
  • Re: BeoMaster 5500 - A hot topic!

    Received my new tools - two cutters and two pliers! The total price for the 4 was £35, but that was by using a £5 voucher - normal price is around £10 each. That meant I was able to finish up the preamplifier. Got it back in the BM5500 this evening and enjoyed some music afterwards. Source was mainly Spotify through my iPhone, so not the greatest. I'm exited to get a proper source connected - could be fun to compare it to my unrestored BM5500 as well! Plan is to get the tuner
    Posted to The Workbench (Forum) by Dennis on Fri, Feb 19 2016
  • Re: BeoMaster 5500 - A hot topic!

    I actually believe I wrote the opposite... I cut one leg of the components (if they are to be scrapped anyway if that isn't obvious...), so they just fall out by themselves when removing the solder - I'm not even touching the components if I can avoid it cause if there is just a little bit of unmelted solder left between the component and the trace, you can be almost certiain, that the trace will lift. And since I don't have a fancy desoldering gun with vacuum but mostly use desoldering
    Posted to The Workbench (Forum) by Dennis on Tue, Feb 16 2016
  • Re: BeoMaster 5500 - A hot topic!

    Only need to replace the 2.2uFs on board 3 now. The reason why I haven't replaced them yet is that my wire cutter is to big to access the legs, so I've ordered some different ones that hopefully will be able to get in there.The copper traces on these kinds of boards lift quite easily if one isn't careful, so I prefer to cut one of the legs on the old caps on the component side so they just fall out when desoldering. Beware that bending the caps to gain access to the legs should be avoided
    Posted to The Workbench (Forum) by Dennis on Mon, Feb 15 2016
  • Re: BeoMaster 5500 - A hot topic!

    Got board 2 back in the BM this weekend and adjusted the idle current. I had set the new trimmers to roughly the same position as the old ones when installing them and the idle current was only of by about 2 mV in each channel as I powered it up. Adjusted it to 11mV for now. Will measure it again later and will probably also have to adjust it again, as I'm thinking of rewiring the transformer to 240V instead of 220V as we have 230V here in Denmark. Board 3 (preamplifier) is coming along as well
    Posted to The Workbench (Forum) by Dennis on Sun, Feb 14 2016
  • Re: Flash your B&O - new thread!

    Posted to General Discussion & Questions (Forum) by Dennis on Sat, Feb 13 2016
  • Re: BeoMaster 5500 - A hot topic!

    Got a little further yesterday. Started off by playing some music at mid to high volume though a pair of MC120.2 for about 15 minutes. Heatsink only got lukewarm, so that was a good sign compared to how it looked when I first got it. After that I pulled board 2 out again to get started on the recapping. Here it is with the new components next to it: And this is how far I had gotten as I called it a day: : I still need to replace the 3 largest caps, so that'll probably be the next step. I received
    Posted to The Workbench (Forum) by Dennis on Tue, Feb 9 2016
  • Re: BeoMaster 5500 - A hot topic!

    @Martin; Golden Roederstein as seen on the picture below. I got board 2 (output and powersupply) out of the BM. I considered mounting the 100nF cap on the underside of the board, but following the traces I could see, that it was also possible to mount it in the holes of J36 and R16 as shown on the picture below and thereby get it on the component side instead. Here's how it looks mounted in place: So, I got the board back in the BM for a test. I was very pleased to see, that the idle current
    Posted to The Workbench (Forum) by Dennis on Sun, Feb 7 2016
  • Re: BeoMaster 5500 - A hot topic!

    Yes, the 4 220nFs are there - C215 and C415 seem to be different though as seen on the picture below... And they didn't spare on the thermal paste! I think I'll try to see first, if the 100nF fixes the problem and then maybe leave it there if it does to prevent it from happening again in the future. They new electrolytics will age as well as the old ones - the 100nF won't. According to the owner, the BM has turned off by itself quite a lot of times, and I can only imagine that was due
    Posted to The Workbench (Forum) by Dennis on Sun, Feb 7 2016
  • Re: BeoMaster 5500 - A hot topic!

    @Martin; Thanks, will change them first then when I get back to it later this evening. Do you think, that it would be a good idea still to add the 100nF like the four 220nF capacitors C215, C216, C415 and C416 were added by B&O to stabilize the power amp? And do you know, if there were made other corrections in the circuits during production? I almost have all parts needed for this project now. I have chosen to use the following caps for this project: - Radial electrolytic caps over and including
    Posted to The Workbench (Forum) by Dennis on Sun, Feb 7 2016
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