Ask an Electronics Question, Get an Answer ASAP!
Hi Keith,Thank you for using Just Answer my name is ***** ***** I will help with your question. I suspect the problem is that one of the transistors has gone short circuit and that's what blows the fuse. The first thing I would suggest is to have a good look over the pcb for burn marks also have a look at the transistors for any holes in them. It may not be a transistor that has failed it could be something else but when I am looking for shorts I tend to start with semiconductors (transistors and diodes).Do you have a multimeter? would you be looking at repairing the unit your self?
I would start testing all the diodes and transistors are see if you can find any that are faulty. I will have a look and see if I can find a schematic for the player. Could you send me the make also if you could send me a photo of the amp that would be a great help too.
Sorry hectic day. I always test the transistors in circuit on the diode setting on my meter. Could you check the capacitors it could be they have dried out. Did you have any buzzing on the speakers before it packed up?Did you test the BC147 and BC148 transistors?