Re: Philips N2204 - Pristine but Not Playing
Hello and welcome to the Forum.
From your description it sounds like there is an internal electronic/electrical fault that is causing excessive load on the batteries/power adapter, like a short circuit or low resistance to the negative side of the electronics.
This assumes that the batteries are good, the power adapter is good and that the battery level indicator meter is good.
It could literally be anything like a failed component (transistor/resistor/capacitor) or a damaged/trapped wire etc, fault finding it may not be easy especially if you are not experienced.
The service information including electrical schematic is available as a purchasable download from the "Instant Downloads" from top right of the screen.
The first thing I would do is to measure the resistance across the +ve & -ve battery contacts with the batteries removed to see if there is a low resistance, low being a few Ohms or 10s of Ohms at most.
If a low resistance measured then would need to go through the circuit disconnecting/isolating as required to track down the problem.
If you follow the battery +ve line you will see that it goes through the Play switch (via the BU2 DIN connector) and connects through to three DC voltage lines/rails identified as A (7.15V), B (7.9V) & C (9V).
These have electrolytic capacitors C751, C754 & C755 respectively connected to them, the -ve side of the capacitors connecting down to ground/0V (denoted by the bold/thick bar line) which is the same connection as the -ve side of the battery. One of these capacitors could be shorted.
David
|