PLEASE HELP!! CVP-209 Technical Problem

[wally]

I had to open up my CVP today to repair a stuck key. Got that done and put it back together and -- oh no!! -- the display wouldn't come on! I took it all back apart again and found that the small ribbon cable that attaches to the left side of the display isn't connected to anything at the other end.

I need someone who has a CVP-209 to look at theirs (or at their service manual) and tell me where I can find the connector for the other end of the cable.

Many thanks!!:confused:

[Midi Magic]

Hi Wally

I have sent you the manuals via your email address.

Good Luck

[wally]

Thanks Midi

You probably used my work email address, which is the one you've reached me at before. I won't be back to work until Tuesday. My home address is oblioATdsincmailDOTcom.

I think I've traced the cable to the DM module, but it looks like it's broken off at the connector, which is soldered to the board. It doesn't unplug. Thus, I think I'm screwed. The cable probably comes with the DM module, which means I would have to buy a DM module just to replace the cable. That's likely to be too expensive to repair.

This really sucks. Just two days ago I purchased a whole set of new MIDI files that I want to learn to play, and now I'm totally dead in the water.

[tomz17]

Thanks Midi
I think I've traced the cable to the DM module, but it looks like it's broken off at the connector, which is soldered to the board. It doesn't unplug. Thus, I think I'm screwed. The cable probably comes with the DM module, which means I would have to buy a DM module just to replace the cable. That's likely to be too expensive to repair.



I've never looked at the ribbons inside a 209 too carefully, and I will be away from home for a while. Are you sure that the ribbon can't slide back into the connector? In laptops and other electronics, it is common to see ribbon cables that simply slide into their connector after you release a built-in sliding plastic tab on the connector.

-Tom

[cowpast]

Wally,

Here is what I can determine from the manual.

The LCD connection at the DM board is referred to as CN10 which is a 20 pin connection. There is only one mention of the cable or connector in the manual. There is an asterisk in a chart about the number of screws that need to be taken out in order to remove the DM board and it refers to the following statement....
* "Be sure to make a correct match when connecting DM (CN10) from the LCD unit".

I couldn't find any reference as too how to do that, so I hope it's something obvious. Also I found no mention of either the cable or a connector CN10 in the parts list.

From this I would guess that the cable is a part of the LCD and it's not a soldered connection on the DM board but possibly a slip in connection of some sort on the top side of the board. Are the wires at the end of the ribbon cable bare?? Have you removed the DM cover to get a look at the connector?? It would close to an edge of the board a short distance from a screw hole and it's identified, (CN10). Hard to tell from the manual but the connection may be under one of a pair of smaller boards that are positioned on top of the DN.

Since you have nothing to lose at this point, it's worth a look. Unfortunately I can't see anything in the service manual that sheds any more light on the subject. Let us know how you make out.

I'm really curious as to why you would be replacing a key when a phone call to Yamaha would get you a new and better keyboard installed.

[wally]

Thanks, Phil and Tom

The CN10 connector on the DM board is the one that I found having the end of the ribbon cable still attached. Funny, but the ribbon cable, where it came apart, is a clean cut as if it was cut with scissors. Can they snap in two cleanly like that? I've never seen that happen before.

I'll call Yamaha tomorrow and see if I can order a cable. I am hoping they can sell me one. I wouldn't be surprised, though, if they made me buy a whole module just to get the cable. The last time I dealt with Yamaha for parts I was trying to buy a new 3.5" disk drive for my 209. They wanted $90!! I found one at CompUSA for $12 and it worked just fine.

My 209 isn't under warranty. That's why I'm trying to fix it myself.

Thanks

[cowpast]

Assuming that you still have the original keyboard it doesn't matter if it's out of warranty or not, they have been replacing the entire keyboard on the 200 series within a range of serial numbers that have key problems. Check it out when you call.

[tomz17]

Assuming that you still have the original keyboard it doesn't matter if it's out of warranty or not, they have been replacing the entire keyboard on the 200 series within a range of serial numbers that have key problems. Check it out when you call.


Here is a picture of a cn10 from a tyros. Is this the same?

http://www.svpworld.com/tyrosinside.htm

-Tom

P.S. may I have a copy of that service manual as well. tomzdotorg at gmail dot com

[cowpast]

Here is a picture of a cn10 from a tyros. Is this the same?

http://www.svpworld.com/tyrosinside.htm

-Tom

P.S. may I have a copy of that service manual as well. tomzdotorg at gmail dot com


Tom,

The CN10 in the Tyros pic is not the same as the CN10 in the Clavinova.

My service manual is a hard copy about the size of a small phone book. They can be obtained from Yamaha for about $35.

[wally]

Well, I ordered a replacement cable. Should be here by the end of the week. I'll let you know how it works after I get it.

[wally]

The cable came in and I replaced it and it fixed the problem. I wasn't able to get the cable threaded properly from beneath the DM's cover, so I had to leave the cover off. The cable is very very delicate where it plugs into the board -- it won't withstand any movement at all. Oh well, my piano's working properly now, but without the cover over the DM module.

[Ian J. Evans]

The cable came in and I replaced it and it fixed the problem. I wasn't able to get the cable threaded properly from beneath the DM's cover, so I had to leave the cover off. The cable is very very delicate where it plugs into the board -- it won't withstand any movement at all. Oh well, my piano's working properly now, but without the cover over the DM module.

Congratulations...You're are a braver man then me Gunga Din.

Ian

[Midi Magic]

Hi Wally

Glad it is all working again. :) :) :)