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
hi ive just joined this site in the hope that i can get the very needed help i want.i got my self a beomaster 3000-2 and it sounded very nice for about 6 mouths now its dead.both quick blow fuses keep poping.so i got myself a beomaster 3000 on ebay to go with my system iwas told it was working all lies and one of the quick blow fuses keeps blowing .can anyone help.
First welcome to Beoworld !
Next, check your speakers and speaker cables. A short here will blow fuses and/or output stages.
Martin
hi martin thank you for your reply.ive tried turning the amp on with no speakers or wires atached still the same
Your speakers could still be what caused the problem.But you will have to diagnose and repair the Beomaster, check for shorted output stage transistors, driver transistors,power supply rectifier etc.
wow martin dont no what you just said .im a compleat novice but i am really keen to fix this 3000-2 .can you advise were to start.i have some commen sence but this is a new field to me
Well... don't take this as an offence, it's not meant to be...This is 1970s electronics, discretely built, requiring diagnose and repairs at component level.There are no easily swapped modules in there- And this repair is most likely not one of the easiest either, - these DC-coupled output stages are known togive even trained tech guys a good run for their money.This job really is for such a trained electronics person.If what I wrote above makes no sense to you, I'm sorry to say that you are not that person.There's also your own safety to bear in mind here!
I will be happy to guide and share my experience but I cannot educate you. :-)
thank you for your time martin.if its ok with you i mite ask you a thing or two about my progress
Sure, ask away.
what type of metor do i need to do some testing
You will need at least a digital multimeter, an oscilloscope would be even better, and you must know how to use them, if you go into repairs you will need a good solder iron, and know how to use it. For test and repairs you must be able to read a schematic and use a repair manual.
If you never done this before or never done electronic repairs before, stay away from it, and leave it to an expert
I totally agree with Martins remark
Collecting Vintage B&O is not a hobby, its a lifestyle.
i am a sparky and do youse a multimeter from time to time and no how to youse a solder iron.ive been looking at the schematic and getting my head around it but wont happern over nite.i have twe amps and like the idea of working on these as a hobby.im going to check for any breaks in the board or wiring .i find it abit strange that both fuses blow after it working the nite before.sorry for my spelling its allways let me down
hi martin could it be the transformer that is blowing the 2 fuses if so are there any tests i can do on it