twofarmers
- Joined May 13, 2020
- 3
It may take me a few days to get back to it, but I will definitely post some photos. I didn't consider point to point connection, thanks. Back soon...Tony
Take your time.It may take me a few days to get back to it, but I will definitely post some photos. I didn't consider point to point connection, thanks. Back soon...Tony
Glad you were able to repair the damage, but you give me too much credit.A near genius, you are. According to your suggestions, I cleaned up the mess I made of the circuit and soldered jumper wires to a connecting node. All is great on the keyboard.
Hi there I'm planning on buying a p95 and it has the same problem with speakers/headpones. What do you mean by connecting HPSW node to Ground on AM board?Hello GermanCoca,
Thank you SOOOOOOOOOOOO much. I had the same problem and solved it with a single shot, thanks to your experience.
I would like to add a small contribution. To test whether the problem is on the headphone path, it is easier just to disconnect the HP board completely and connect HPSW node to GND on AM board, instead of desoldering C217 and C216. If the problem is the same, the speakers should start working.
I am curious if this is just a coincidence that among all other capacitors, the same were problematic in both cases. Here is the only misuse I can think of: I recently bought a sennheiser hd558 headphone whose cable can be detached from its speaker. When I was using my piano I used 3m cable and when listening to music, I switched to 1.2 m cable while leaving the 3m cable on piano, with its other end open. I touched that open end many times when I switched from playing on the piano and listening to the music. Do you guys have any idea if this could cause the harm mentioned above?
Thanks again GermanCoca!
If you can locate a schematic, someone might be able to help.Today I found this p 95 for $131 (120EUR).
You let me know if you find one. Someone on this thread was quoted 250 GBP for a replacement from a repair shop I think, but it begs to ask how the shop could source one and we're scraping the internet for one... =[First, thanks for the huge amount of info from this thread. I have a P95 with the exact symptoms, no voice. Long story short, I identified the bad capacitors and purchased replacements. When I was replacing them, I either overheated the circuit board or my trusty soldering iron is overheating. Either way, the capacitor will not solder in place because of the foil trace damage. I tried a carbon pen but was unsuccessful. Most depressing since I thought I was pretty competent with a soldering iron. Anyway, I am now on the hunt for a replacement AM board (Yamaha part # WK351200). Anybody got a spare or a source? Thanks...Tony
Read post #60.i'm tempted to have a local electronics shop try to undo the trace foil damage I did removing C217.
Oh yeah, in fact it was your advice that inspired me to rescue it with my amateur soldering. Except I only butchered it worse, and probably because I didn’t use flux (—does a rosin core solder help?) during the melting phase. I then tried to loop the length of the new EC around and back down to the board across the damage. Atrocious. I’ll post pics later if anyone needs a good laugh.Welcome to AAC!
Read post #60.
Do they even make solder that doesn't have a flux core? I rarely use additional flux.probably because I didn’t use flux (—does a rosin core solder help?)
Oh man, prepare to witness total chaos. I used a little 30W Radio Shack Kit iron. I’m thinking if I can heat the solder between these two points (—you’ll see what I mean when the photo loads) it’ll form a literal bridge and maybe bring continuity from the EC217 to Pin 4. Please advise if I should scrap it and just clean it up and start from scratch with this thing. I won’t give up on my first piano, and I love tinkering with electronics so I’m determined to see this through. Look at how tall my new sits compared to its OEM sibling.Do they even make solder that doesn't have a flux core? I rarely use additional flux.
What is the wattage of your iron and its tip size?
If the points circled in red are connected, you should be good to go.Sheesh that trace foil damage would make my old instructors from BMT cringe
Thread starter | Similar threads | Forum | Replies | Date |
---|---|---|---|---|
Cell Phone Non Replaceable Battery Replacement Success | Technical Repair | 16 | ||
M | Success stories: coffee machine dim display | Technical Repair | 2 | |
You child labor success stories.... | Off-Topic | 16 | ||
SUCCESS STORIES: Repair thermoelectric cooler | Technical Repair | 508 | ||
F | Anyone have any quit smoking success stories? | Off-Topic | 6 |
by Duane Benson
by Jake Hertz
by Duane Benson
by Aaron Carman