I have the same amplifier dsp A-1000 and i set it up last week for its 5 use in 20 plus years. It just sits on top of one of the corner jamo cabinet speaker with a DATsony player on top thats been used a couple of times. I have a problem with it inherited mode control switch in cd mode cutting sounds from left and right balance. I stick toothpicks to jam it in position and will get round to stripping remove and clean dirty contacts. But like the sound to stereo
You can see what the traces are like inside at the back of the unit. Its quite amazing that they just go to PCB, no fancy gold trace etc. Makes you think about the value of expensive connection cables.
Nice tip on how to get the board out without completely disassembling the front again, thank you 🙂 Any idea how to fix the surround channels not sounding until you turn the volume up a fair bit? I use the white noise test and once they're working they stay working until you turn it off and leave it a few days. Not the end of the world but a bit of a faff...
Hi sounds like a dry joint. I found a maintenance manual that listed all the boards. Download that and find the one IIRC which does the surround proessing. I'd then disconnect everything and take it out (reasonable possibility its the wires conections). While out inspect the solder joints (less likely the problem now thinking about it). Sounds like something is open circuit till the voltage raises and forces it closed (high volume) and after that its OK till you turn off and have zero voltage again for a while. used to happen with tin plated ram dimms in gold contactor motherboard strips good luck! report back
I have the Yamaha DSP-A1 I purchased at RAF Mildenhall back in 1998, I took it out of the closet a couple months ago and it still has the same problem of the display going on and off sometimes. Is there a way to get that display board out without disassembling all the amplifier just to solder those connectors?
I have the same amplifier dsp A-1000 and i set it up last week for its 5 use in 20 plus years. It just sits on top of one of the corner jamo cabinet speaker with a DATsony player on top thats been used a couple of times. I have a problem with it inherited mode control switch in cd mode cutting sounds from left and right balance. I stick toothpicks to jam it in position and will get round to stripping remove and clean dirty contacts. But like the sound to stereo
You can see what the traces are like inside at the back of the unit. Its quite amazing that they just go to PCB, no fancy gold trace etc. Makes you think about the value of expensive connection cables.
Nice tip on how to get the board out without completely disassembling the front again, thank you 🙂
Any idea how to fix the surround channels not sounding until you turn the volume up a fair bit? I use the white noise test and once they're working they stay working until you turn it off and leave it a few days. Not the end of the world but a bit of a faff...
Hi
sounds like a dry joint.
I found a maintenance manual that listed all the boards. Download that and find the one IIRC which does the surround proessing. I'd then disconnect everything and take it out (reasonable possibility its the wires conections). While out inspect the solder joints (less likely the problem now thinking about it).
Sounds like something is open circuit till the voltage raises and forces it closed (high volume) and after that its OK till you turn off and have zero voltage again for a while.
used to happen with tin plated ram dimms in gold contactor motherboard strips
good luck! report back
I have the Yamaha DSP-A1 I purchased at RAF Mildenhall back in 1998, I took it out of the closet a couple months ago and it still has the same problem of the display going on and off sometimes. Is there a way to get that display board out without disassembling all the amplifier just to solder those connectors?