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Repairing GEM novoPiano DP-25

Hubert Huber

Nov 28, 2015
1
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Nov 28, 2015
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MANY THANKS !!! Your detailed description for dismantling and functionality helped me really a lot. An awful lot. THANKS
Used you Information on an GEM novoPiano DP-20
 

alessandro

Aug 26, 2016
1
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Aug 26, 2016
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1
I would like to thanks Steve for his info on how to disassembly the DP30!!! Anyway, my piano, after over 25 years of satisfaction, decided to produce a large leakage at the back up battery..... with lot of damage on the PCB (plus the 400mA fuse...). I will replace next week.
 

bakis

Mar 20, 2018
1
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Mar 20, 2018
Messages
1
Hi!
Thanks for your post.
I have the occasion to but one of these. Do you think it's worth a chance just for exercise and practice? I'm not expert about digital piano and I have found it with a reasonable price. Thanks for any reply
 

queen12

Apr 12, 2021
1
Joined
Apr 12, 2021
Messages
1
I moved my sons Gem Novo piano DP30 the movers stepped on a chord that plugs into something on the back. ( the red one is ok)
while loading their truck and the top came off.
1F1241BB-43AE-434B-BCCC-E1CC179BD5F9.jpeg
8DE79A1F-7FF2-46B9-A870-6EBA86A9C8C6.jpeg
They also lost the plug for the wall. Where can I get these 2 cords? Please help
 
Last edited by a moderator:

bertus

Moderator
Nov 8, 2019
3,303
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Nov 8, 2019
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3,303
Hello,

The red connector looks like a 6.3 mm mono connector.
On the other side there was likely a black one.
The power connector is a IEC C14 input.
The IEC C13 is a mating connector:
power connectors.png

Wich region are you in and what is the mains voltage.
I have only seen that type of connector here in europe for 230 Volts.

Perhaps @(*steve*) has more info.

Bertus
 

Martaine2005

May 12, 2015
4,932
Joined
May 12, 2015
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4,932
Do any of these cables look familiar?

upload_2021-4-13_11-5-36.jpeg6.3mm mono to 6.3mm stereo.
images
6.3mm mono cable.
upload_2021-4-13_11-6-7.jpeg6.3mm mono to 3.5mm stereo.
images
6.3mm to RCA (phono).

Martin
 

duduch33

Dec 18, 2022
2
Joined
Dec 18, 2022
Messages
2
Hello i just bought the manual from those carpetbagger who sell manuals for way too much money on ebay.
So i here it is for free !
 

Attachments

  • Gem DP20 DP25 Service.pdf
    3.1 MB · Views: 24

kellys_eye

Jun 25, 2010
6,514
Joined
Jun 25, 2010
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6,514
That's generous of you. More people should upload such manuals to bring these 'bandits' under control.....
 

duduch33

Dec 18, 2022
2
Joined
Dec 18, 2022
Messages
2
So i found the problem on mine the eprom is bad or erased the adress bus is ok but there is nothing on the data bus apart a little background sound on certain keys and preset. I will buy an eprom reader next month and try to read it see if i can save a part of its program. On the dp20-25-40 the eprom only contain the samples if i have understand it correctly, so i'm optimistic that if i find out how they have written and arranged the samples in the program i could at worst replace the original samples by any others.

For the moment it's my midi Controller on ableton, just for that it's way better feeling than any others cheap midi controller.

By the way if someone have the eprom data saved or can copy one, please can you send it to me !
 
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