Australia
Total Posts: 2
Joined: December 26, 2018
|
Hello,
I bought a SX-PR703 in 2001 and it has been an awesome piece of kit up until recently. It seems that it will not boot-up anymore. No lights. Nothing. I did all the usual checks that a typical owner does, unplug it, wait, plug it back in and try again. Nothing. One time (no, not at band camp!), it managed to boot-up and I could play only about 8 notes, and it went dead again. There is no hint of anything happening. All the usual sounds you here when booting up (like the sound of the floppy drive being detected), are no longer heard.
Anyway, that was last year 2017. I have decided that I want to do something about this instrument, as if it's going to be taking up space, it should at least work, right? It seems quite a shame to even think about sending it to the landfill. The amplifier side of things was always amazing, though I don't get anything whatsoever out of it currently.
So, if anyone has any ideas as to what the problem is, or, has a circuit diagram of the PR703, I would be most appreciative.
Have a good one!
...and thank you, in advance.
Tags:
Posted on December 26, 2018 at 6:13 AM
|
United Kingdom
Total Posts: 360
Joined: June 8, 2014
|
Re: SX-PR703 Won't Boot Up
Hi and welcome to the site, Sorry you are having problems with your PR, when you say you are getting nothing,is there any life? does the LED''s light up or the screen back-light come on? I know it is obvious but you have checked the mains feed and fuse in the plug ( if fitted in Australia ) and the power lead is firmly inserted into the socket in the rear of the instrument. Also is the power indicator in the front rail on the left-hand side illuminated ? Next I would proceed to do a Factory reset which is done by holding the first 3 buttons of the RHYTHM section on the Bottom row and Power up the instrument. and see if you get a response.
I will pass your details on to our resident engineer, so please let us know how you get on.
Best regard for the New Year
John
PS. (it cold and grey here in England hope it' warm where you are )
Posted on December 26, 2018 at 3:24 PM
|
Australia
Total Posts: 2
Joined: December 26, 2018
|
Re: SX-PR703 Won't Boot Up
Hi John - thank you for the quick response! Apologies, for the limited information I provided in my first post. So, to answer your questions:
Q - Does the LED''s light up or the screen back-light come on?
A - Yes, the power LED on the front left rail does light up, none of the functional LEDs, and the LCD screen is backlit only (no text/images).
Q - I know it is obvious but you have checked the mains feed and fuse in the plug ( if fitted in Australia ) and the power lead is firmly inserted into the socket in the rear of the instrument.
A - Yes, I have unplugged and re-attached the mains power cable, firmly. No fuse fitted to the plug here.
Q - Next I would proceed to do a Factory reset which is done by holding the first 3 buttons of the RHYTHM section on the Bottom row and Power up the instrument. and see if you get a response.
A - Yes, I did, or should I say, tried, a factory reset but this didn't make any difference.
All of the above should have been included in my original post as I have tried the above many times, so again, apologies for not advising initially. Having said that, when considering your questions/suggestions, I could not really remember if the LED on the front left illuminated or not, so I set about re-installing the motherboard (I was preparing to send it away for repair), to check the LED on power-up. As it turns out, the entire piano booted-up and light-up perfectly. Don't ask me why, cos I don't know. Cautiously optimistic, I tried playing a few notes. I found that after about 8 notes, there was no sound at all, not even a hum from the amp. I turned the piano off, waited, and did the factory reset (3 button) thingy, and this time, I got a message on the LCD saying that it was doing the factory reset (I never got this before)...and presto! the piano works again. This time I hit the demo button and let it do its thing for a while. I booted-up my music PC to check the MIDI and audio communications side of things, and it worked perfectly.
I must add, that at this stage the motherboard is not fully secured on the nylon stand-off posts - it's just sitting there. I turned the piano off again, waited, and turned it on. This time, no audio (not PC audio) from the piano.
Long story short, I had a few more issues with there being a working piano, but could only play about 8 notes, and then no audio again. With the top lid removed, power on, I found that the connector that goes between the amplifier circuit board and the motherboard (the white connector a little over an inch long, half was up the left side of the motherboard (when sitting at the keyboard)), was suspect. I used a wooden skewer to lightly press on this white connector, and when I did, the floppy drive was detected and the piano was usable again. I found that this was my solution a couple of times, so I would suspect that the pins in the connector need a good clean and re-seating.
I began playing the piano (such as my abilities currently are!), and about 40 minutes in, the piano stopped working again. Out with the skewer, and off I went again.
You made mention of the cold and grey conditions there in the U.K., well, this leads me to another potential issue with my piano...HEAT! Where I am located, we are going through the usual summer heatwave, and today it is 39C. And with that, I could feel the heat coming off the amplifier board. Given the volume of space inside the piano cavity, I will be installing a fan to suck in cooler air, and blasting the hot air out of the piano.
Over the next few days, I'll monitor the situation and report back anything of interest/use/whatever.
Best wishes for 2019.
Cheers,
Will.
Posted on December 28, 2018 at 5:45 AM
|
