Would putting an EVM10DLX into a set of Yamaha BR-10s be a recommended upgrade? Worth the cost?

ask yamaha this, direct to them or read the manual firsts. 2010 made.
lost the manual ? did you?????
any app you run most be from maker yamaha for w10.
Yamaha DGX-640 88-Key Portable Digital Grand Piano with Weight-Graded Hammer Action.all there is , is here
yam

https://usa.yamaha.com/support/updates/index.html?c=digital_pianos&k=640

https://usa.yamaha.com/files/download/other_assets/2/314552/dgx640_en_om_a0.pdf

i guess you talking about what page 15 states.
then page 97 how to do it>?

what it can do is all there song file wise.

it shows w7 max.
but some apps w7 sure can be loaded to w10 or drivers
using windows 10
w7 compatibility mode as MS tells you.
seen here.
windows 10 32bit or 64 I see this too


https://usa.yamaha.com/support/updates/index.html?c=digital_pianos&k=DGX

try these?

Sorry but we are not an appraisal service, no way to look this up.

current market flooded with pianos for sale
ebay has many listed
$500 to $1200 max

yours would have to be a grand or fully restored upright to get top dollar

worth what some one will pay you for it


for example serial number 578613.
this one its owner is asking $ 800 or best offer

use this link to get more historical information
contact us
http://antiquepianoshop.com/online-museum/kohler-campbell/

only worth what a person would pay you for it
.
the only way to get top dollar is to have it fully reconditioned back to looking new by .Kohler & Campbell themselves
.internals and outer casing
..
lots of pianos out there for sale

a basic upright .lucky to get .$800 or less
1951 ..not that much in demand not rare
iron framed and depends on what the condition

strange and annoying

any power surges noticed

could be wall plug lead
or the 240 volt internal power transformer problem

there are repairable
all yamaha musical instruments web sites do have authorized service centers listed
sub menu services
link
https://www.yamaha.com/en/

worth contacting amazon also .
they may have a Yamaha repair contact

amazon sell the whole violins .
Amazon com Yamaha SV 130 Silent Violin Navy Blue Musical Instruments

Whether it happens to all of the key?
If yes, transpose setting may have changed. Change the setting to normal (0).
If the normal transpose, but tuning is still not standardized, check Pitch Setting.
To Restore Standard Pitch setting:
Hold down the A-1, B-1, C0 and C # 0 keys simultaneously and press any key between C3 and B3.
View image :


If the above procedure is still no effect, try resetting the factory settings / Initialize overall: :
This is the steps:
Initializing the Settings
When you initialize the settings, all backup data stored to this instrument will be initialized and reset to the factory default settings.
Turn off the power to the instrument. Then, simultaneously hold down the C7 key (right-most key on the keyboard) and turn the power on again.

NOTICE
Do not turn off the power to this instrument while it is initializing the data in its internal memory (that is, while the button indicators are flashing).

View image:




Notes:
If this instrument somehow becomes disabled or malfunctions, turn off the power to the instrument, then perform the initialization procedure.

Most likely it is not worth it fixing it. You can probably get a new model with more features for about the same price of fixing this one. Let it go anf upgrade. That is the reality of electronics and technology.

Personally I recommend the following set up:

Distortion>Effects>Compression/Noisegates/Sustain

This will ensure that the signal won't have any odd hiccups due to an odd pedal setup. But if you play around with different orders, you can end up with some very interested sounds.

Check if you may have knocked off the speaker leads OR ones to an expression pedal.