I've never seen mention of buss bar in solid state circuit design, only in reference to service panels which go on the outsides of homes. But to your query, I hope you can create a safe working environment for yourself before doing any more work. Also, if you love electronics, there are plenty of technical schools and colleges that can provide safe environments for building smaller versions of the things that add up to what you are working on now, over 2, 3 or 4 courses. Some of the helpful suggestions above are probably well-intended but I would take the capacitor's 'discharge' as a heavenly sign and probably junk or store your science project until help arrives. You can easily die if the testing method is "hoping it doesn't blow up when plugged in" and you didn't mention if you were working with any isolated power supply, GFCI if you were wearing eyewear, or were near other people when doing this. Any other attempt for knowledge transfer couldn't cover the one or two-hundred pages of information you will need to protect yourself and the potential buyer, especially the potential cost if a buyer gets hurt. "Recapping" is probably the worst point to start learning especially if you are not familiar with an overall circuit design, self-preservation, (i.e. no channels at this point) and what each piece does and what specifications to "recap" with.
Filter capacitor issue
I've been a member for over 10 years and have never posted anything on here so please bear with me. My main system is a Bedini BA-802 solid state amplifier, Music Hall Maverick SACD player, Magnepan MG2.6r speakers, Denon DP-59L turntable with Micro Acoustics MA-2002e cart but I have an issue with a Marantz 2220b receiver that hopefully someone on here can help me with. I bought the receiver with plans to do some simple upgrades ie: replace some caps, etc. and resell it. I When I changed out the large filter caps I inadvertently installed the cap for the left channel backwards. I put both negative terminals on the buss bar. The right channel cap is installed with negative on the buss bar and the left channel cap should have been installed with the positive terminal on the buss bar. Needless to say the left channel cap got angry and blew it's top. After realizing my error I put in a new cap correctly but now the main 2 amp fuse is blowing after about 20 seconds. I'm thinking I may have damaged the power transistors or smaller transistors on the main amp board. The service manual also says to check the thermistors on the amp board. I'm not an electronics tech but my brother is and has been teaching me some basics over the last few months. Unfortunately he's not here to help me out this week so if anyone has any insight into this it would be much appreciated. Thanks in advance, Eddie D.
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There's a Marantz 2220b, in good working order, currently on Ebay for $300 (BIN $400) https://www.ebay.com/itm/173698186290 You may want to consider it for parts or replacement |
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- 28 posts total