Ok. This is making me really mad. I wanted to do the whole MP3 in car thing and I thought the WSP would be an excellent choice for my situation. Here is my setup:
Websurfer Pro
Stock CPU
48MB RAM
1.2 GB Hard drive in custom external removable case with security lock
CompUSA SIIG IDE/IO controller card
Hacked line in, out, and mic inputs
Handspring Visor Deluxe with custom serial cable for controlling player
Windows 98 Lite III
WinAmp with PalmAmp plugin
300W power inverter hard wired to the battery
Pioneer DEH-5200 stereo with IPbus to RCA input
Stock Speakers
Rockford Fosgate 10" sub
Rockford Fosgate 100z2 amp
1996 Chevy Cavalier
The problem is when I boot into Windows (It only happens in windows), there is a nasty crackling sound coming from the left channel. It is a very random sound and will happen at anytime. Here is the list of things I've tried to remedy the problem but have no effect on my situation:
Checking all connections and making sure all audio cables are separated from power cables
Removing and replacing the ram
Recrimping all hard drive splices
Turning on MP3 player before the stereo (I'll explain in a moment)
Tried a portable CD player on my stereo to rule out a stereo equipment problem
Tried headphones on the line out (Still crackles)
Tried a different hard drive with an identical partition
Tried connecting the player to a AC source from my house (Still crackles)
Tried disconnecting the subwoofer to rule out EMI and line noise
Tried underclocking the processor
Tried disconnecting the serial cable to see if there is a separate ground loop problem
Tried posting a message on www.mp3car.com but we have all agreed that the problem is within the WSP
Tried removing the SVGA connector (don't ask em why I tried that)
One of the things I've tried is to keep the stereo off until the player boots into windows. I tried this because the instructions that came with my stereo say that above a certain voltage coming into the inputs could result in a malfunction. Unfortunatly, this doesn't solve the problem. Here is a list of things I'm going to try:
Removing all modifications I have done to the motherboard (I've tried hacking the HD controller but without success)
Resolving the PCI Bridge driver problem (I doubt this has anything to do with it)
Removing the whole player and trying it inside my house (haven't done this since I installed the audio connectors)
Changing the BIOS (I'm currently using one from the 4bios.zip but don't remember which)
Changing the sound drivers
Changing the PSU
That's it. That's all I can think of that would resolve my problem. I ask EVERYONE to please shed some light on my problem. I'd apreciate it. I've put some good money into this system I'm trying to finish and this is the last problem I'm having. Other than the constant random crackles the system sounds pretty damn good but it does get very annoying. If you want, I can record the sound I'm getting and post it for everybody to hear if that will give you any ideas. I can also post some pictures of my setup once I see some successfull results on the problem I'm having. I will continue to give updates on what I've tried. Please help me out!!!!!!
