Chosen Solution
I had a memorex mp3 player i never used it but now i want to use it not powering on after charging for 4-5 hours model MMP8595-BLK
The problem you describe sounds like a bad battery. Can you check the battery by setting a multimeter to the 20 volts DC range, then holding the positive probe onto the red wire connected to the battery and the negative probe onto the black wire connected to the battery?
