Hello all. I just joined the forum this morning after researching my GPX 990 this weekend.
I inherited this killer box from my cousin, and the first thing i did when I got it home, was attempt to blast some Run DMC through the RCA jacks via an iPod (like I do on my other box.) Sadly, the left channel was extremely quiet. I found, that if I pulled the left RCA jack to the right a little bit, it would make a connection, and BOOM, there was the audio in all it's former glory.
So, I decided to investigate further. After taking it apart, I heated up that solder point to see if I could fix a loose solder joint, and when I heated it up, it lifted off the board, taking the PCB circuit with it. I then tried to tack a wire to the next component in line, but it's still quiet.
I'm wondering if the RCA jack needs replacing, or if the circuit just needs repair. Without a schematic, or a parts list, I have no idea where to start.
I've contacted GPX directly, to see if they have anything on file. I've only worked on DIY mic pre kits (difficult builds) and guitar pedals, but those are pretty much color-by-numbers. Working blind on an old boombox, I might be out of my depth.
If anyone has any any advice on how to proceed, I'd appreciate it a TON.
Here's me messing with my box over the weekend.
https://instagram.com/p/2OdNPvCo8G/
I inherited this killer box from my cousin, and the first thing i did when I got it home, was attempt to blast some Run DMC through the RCA jacks via an iPod (like I do on my other box.) Sadly, the left channel was extremely quiet. I found, that if I pulled the left RCA jack to the right a little bit, it would make a connection, and BOOM, there was the audio in all it's former glory.
So, I decided to investigate further. After taking it apart, I heated up that solder point to see if I could fix a loose solder joint, and when I heated it up, it lifted off the board, taking the PCB circuit with it. I then tried to tack a wire to the next component in line, but it's still quiet.
I'm wondering if the RCA jack needs replacing, or if the circuit just needs repair. Without a schematic, or a parts list, I have no idea where to start.
I've contacted GPX directly, to see if they have anything on file. I've only worked on DIY mic pre kits (difficult builds) and guitar pedals, but those are pretty much color-by-numbers. Working blind on an old boombox, I might be out of my depth.
If anyone has any any advice on how to proceed, I'd appreciate it a TON.
Here's me messing with my box over the weekend.
https://instagram.com/p/2OdNPvCo8G/
