Hey guys, I'm pretty new here. I'm not new to audio, I'm just not sure what my best course of action would be. I traded a cheap electric guitar for a pair of Pioneer CS-A700's, which to my surprise are incredible. They started to distort a bit and the pots were pretty dirty, so I popped them open to clean them up, and now they just flat out don't work. I don't know if I should start replacing wiring or just gut them and put completely new everything in there since they started going down hill. Any suggestions?
Register to hide this ad
I opened them up and I pulled everything out and reconnected everything and made sure it was all snug. The sound was super clear for like 20 seconds and now it's really faint and crackly, which is back to where they were. So I'm wondering if the wiring is just bad, I know the speakers are fine since they were working well for a little bit.
teal'c
Nuclear Cardiac Parent
It's unlikely your wiring is bad. You can check it for corrosion on and in the connections, other than a break it's fine. More than likely it's dirty switches and/or bad capacitors.
Read the deoxit for dummies thread (useful even if you aren't a dummy.) and start reading about recapping.
Looks like lots of contacts to get corroded while sitting. http://audiokarma.org/forums/index.php?threads/pioneer-cs-a700-speaker-parts.747298/
Read the deoxit for dummies thread (useful even if you aren't a dummy.) and start reading about recapping.
Looks like lots of contacts to get corroded while sitting. http://audiokarma.org/forums/index.php?threads/pioneer-cs-a700-speaker-parts.747298/
dc270
Now Off the Reservation
Welcome to our little group. It is a divide and conquer everything knda deal. If it were me I would connect up the negative lead as normal, the take the other + lead, on very low volume, and start jumping components that are hooked up to the + wire traces/ wires. I have a feeling that it could be a failing reset switch or some of the caps going bad after a 20 sec warm up. Being an older model Pioneer it may not have a re-set switch but a fast blow glass fuse. Glass fuses either works or not. Reflowing the solder joints can help as well.
Doing this can help you know which driver or crossover board component could be failing. You can check your drivers with a regular ohm meter as well. It is my rule of thumb with Electrolytic caps, like the ones in those, and over 20 years old, to replace capacitors with near the same uF rating or near as, rating over 100 volts. You can twist the cap wire leads together to obtain a closer uF rating too.
All, If you need to replace the caps, you can use new and longer lasting Poly or "Film" caps like Parts Express "Dayton" poly types. Another option is to replace just the caps in the low end with Elecctrolytics and Polys in the upper end tweeter circuits.
Best of luck anyway. Intermittent shorts can be a real time eater....If I can help, feel free to PM me and I'll do what I can..
DC
Doing this can help you know which driver or crossover board component could be failing. You can check your drivers with a regular ohm meter as well. It is my rule of thumb with Electrolytic caps, like the ones in those, and over 20 years old, to replace capacitors with near the same uF rating or near as, rating over 100 volts. You can twist the cap wire leads together to obtain a closer uF rating too.
All, If you need to replace the caps, you can use new and longer lasting Poly or "Film" caps like Parts Express "Dayton" poly types. Another option is to replace just the caps in the low end with Elecctrolytics and Polys in the upper end tweeter circuits.
Best of luck anyway. Intermittent shorts can be a real time eater....If I can help, feel free to PM me and I'll do what I can..
DC
So I got a few cans of contact cleaner, after using up my previous can a few days ago and nothing changed. Turns out the pots and connections were just suuuuper dirty. I used a whole can on 2 pots and a few main connections. Finally got them up and going. Should have been more patient with the cleaning process. Ya live and ya learn, I suppose. 
Thanks for the helpful tips, you've all been incredibly helpful!
Thanks for the helpful tips, you've all been incredibly helpful!
LAB3
AK Member
Hi DC
It's been a long time. I am back into my stereo again after learning how to to use my late parents Ham Radio equipment. The FCC tests were hard. Anyway I gave my son my Cerwin Vega AT-15 speakers years ago and the 15" red surrounds are cracked etc and need replacing. Do you still do speaker repairs? If I bring you the woofers can you fix them?
Thanks
Louis
It's been a long time. I am back into my stereo again after learning how to to use my late parents Ham Radio equipment. The FCC tests were hard. Anyway I gave my son my Cerwin Vega AT-15 speakers years ago and the 15" red surrounds are cracked etc and need replacing. Do you still do speaker repairs? If I bring you the woofers can you fix them?
Thanks
Louis
LAB3
AK Member
Hey Doug
My lap top died and all my old info is lost, your address, email. I tried to PM you here and duh for the life of me I do not see a PM tab. ..I went to cable and my email is different now. I still need soldering lessons LOL
I remember how to get to your house but forgot the street name.
Louis
My lap top died and all my old info is lost, your address, email. I tried to PM you here and duh for the life of me I do not see a PM tab. ..I went to cable and my email is different now. I still need soldering lessons LOL
I remember how to get to your house but forgot the street name.
Louis
At the top right of your screen is an INBOX button. They're called Conversations now, not PMs.
Or click on a user name and select START A CONVERSATION.
Or click on a user name and select START A CONVERSATION.