Thank you, now I have the confidence to stick that new bad boy in there. I noticed you used and engraver pen to undo the old solder joints. Was this so you wouldn't use to much heat?
very good video I only have one problem I have changed the battery for a new one but the message CHANGE BATTERY still appears I don't know where to start or what to do has anyone solved the problem in some way?????
You mean easier for future maintenance? Probably, but it all depends what you want to do. It would be even easier to install magnetic FRAM and never change a battery again. Regardless this video shows how to get to the battery and change it. What you change it to is your choice. :)
I'm glad someone soldered a battery holder in the DX-7II FD I bought. It took about five minutes to replace it, then a much longer time to restore all the presets that were gone.
It's the only way to Dx7 in my opinion. 8 preset banks worth of E! patches that are stored in nvram and cannot be erased combined with 10 user preset banks compared to one bank and a cartridge bank if you have a cart is enough reason to go E! card. Not to mention the midi improvements - it's insane.
@@djraymondlive Damn, have you ever seen it say "replace battery" in the screen ever before this happened? This is pretty textbook dead battery behavior.
it's same solder crap on TX 802 and TG77. why they didn't use 5 cent battery holder is beyond me.typical battery holders do not fit tx802 the pin spacing is different. the holes on board are 5/8 inch apart while all battery holder the pins are 3/4 inch.
Is there any info of the "Ram corrupted" message? Replaced the battery, everything seems good except that message came on and when I turn on and off, Grey Matter screen popped up, but no sound. I did do a SySex dump w original patches, everything transferred good but again no sound. And original sound you had with the message was working but now not working when greymatter on. Probably something simple?
Thanks for the video. Just curious, my display is not saying dead battery, but just a bunch of random jumbled numbers & characters? I was assuming it was the battery but would like your opinion? Thanks
Hi, what's the problem if battery is new but there is still the message "battery to change' and internal voices are reset each time the DX is off ? By the way, the battery check function shows ' 4,5 v'. Thanks in advance for help.
I've recapped the PSU in my Dx7, and thinking of recapping the main board. Do I need audio grade caps for that (since it's a digital synth)? Any caps on the analog outputs?
It totally depends on the circuit. The circuit's usage of the capacitor will dictate which properties would be important for the capacitor. For a S&H capacitor, low leakage is important. But that would all be digital on the DX-7.
Anyone knows where I can buy that cr2032 for DX7 in Canada? Nobody wants to ship it to Canada. I have checked a number of websites including Ebay. Even Mouser in Canada doesn't ship it in Canada because it is lithium battery.
You are so helpful. I actually found CR2032 battery holder on Amazon.ca Tomorrow, I will visit Radioshack just in case. If not, will order from Amazon.ca I actually liked idea of holder. Thanks again!
Have you ever replaced the aftertouch felt on a DX7? Mine is very torn up. I've been searching for a while and can't find replacement parts anywhere. If replacement is possible this could be a great item for sale on your website.
Hey buddy, nice video! I've got to change mine that has all of Bo Tomlyn's sounds he programmed for Michael Jackson in it. When you pull the battery did you lose the internal RAM? I still have my Commodore 64 Computer with 10,000 sounds, I never converted all the sounds to MacBook. ua-cam.com/video/-m29nyMpRxk/v-deo.html lol. not sure how to store them before I would pull it. I got 4 ram cartridges and thinking of selling it with custom case for $750 , it has the "Special Edition" board with LED. thoughts?
Thx for the video. I replaced my battery in 30 mins. DX7 now works perfect 😎. Voltage 3.1 V
Thank you, now I have the confidence to stick that new bad boy in there. I noticed you used and engraver pen to undo the old solder joints. Was this so you wouldn't use to much heat?
very good video I only have one problem I have changed the battery for a new one but the message CHANGE BATTERY still appears I don't know where to start or what to do has anyone solved the problem in some way?????
You make it look easy. :) Thank you very much for sharing!
If i change the battery, does the sounds remain? Or it will be lost? I mena the internal sounds
Is the Corrupt RAM a result of the battery issue (and something that can be prevented in some way) or a separate and independent issue?
Hi, wouldn't it be easier to solder a battery holder instead?
You mean easier for future maintenance? Probably, but it all depends what you want to do. It would be even easier to install magnetic FRAM and never change a battery again. Regardless this video shows how to get to the battery and change it. What you change it to is your choice. :)
Can you show how you would install FRAM in a synth? Please.
I'm glad someone soldered a battery holder in the DX-7II FD I bought. It took about five minutes to replace it, then a much longer time to restore all the presets that were gone.
@@scottlarson1548 Yeah I added battery holder to my DX7 as well. No more unnessesary work with disassembly and soldering in future.
OOOOOO, the Grey Matter Response E! board! Heard that it turned the DX-7 into a real powerhouse, with increased memory, mod routings, etc.
It's the only way to Dx7 in my opinion.
8 preset banks worth of E! patches that are stored in nvram and cannot be erased combined with 10 user preset banks compared to one bank and a cartridge bank if you have a cart is enough reason to go E! card. Not to mention the midi improvements - it's insane.
@@atpdx yeah but what happens when the Ram is currupt! my dx wont let me take memory protect to do anything
@@djraymondlive What your battery voltage? Hit Function and the button 14 and post what it says.
@@atpdx it won't even let me check it
@@djraymondlive Damn, have you ever seen it say "replace battery" in the screen ever before this happened? This is pretty textbook dead battery behavior.
it's same solder crap on TX 802 and TG77. why they didn't use 5 cent battery holder is beyond me.typical battery holders do not fit tx802 the pin spacing is different. the holes on board are 5/8 inch apart while all battery holder the pins are 3/4 inch.
I have a DX7 exactly like yours. it has a Grey matter installed but RAM is currupt! what do you think happened?
and how can you fix it
Hello, my DX7 hace the number on the lcd, like blinking and changing and the lcd wherte the names goes itsnt showing anything. how can I repair it?
Is there any info of the "Ram corrupted" message? Replaced the battery, everything seems good except that message came on and when I turn on and off, Grey Matter screen popped up, but no sound. I did do a SySex dump w original patches, everything transferred good but again no sound. And original sound you had with the message was working but now not working when greymatter on. Probably something simple?
Hi, have the same issue. Did you ever find a solution? Thanks!
Thanks for the video. Just curious, my display is not saying dead battery, but just a bunch of random jumbled numbers & characters? I was assuming it was the battery but would like your opinion? Thanks
Hi, what's the problem if battery is new but there is still the message "battery to change' and internal voices are reset each time the DX is off ? By the way, the battery check function shows ' 4,5 v'. Thanks in advance for help.
hi, is it possible to solder new battery in parallel with all one so there is no power loss and no performance preset loss?
Ohhhhhhhhhhhhhhhh ! How I would love to see some work on a Kurzweil Midiboard ,
Thanks!
What did you clean the flux residue off the board with??
Denatured alcohol. Cheap and works great.
I love the DX7
Hi, do you know how to change the memory battery of an Alesis DM5 which is soldered into that device?
thanks i have to replace the AC capacitor on my dx7 as it died horribly.
Could you tell me the name of tool 3:42 ?
It's a Hakko FR-301: amzn.to/3PUyp3N
@@Synthchaser Thanks！
Mine lookd dead, no display no sound no leds. Can anybody help me taking PSU measurments ?
I've recapped the PSU in my Dx7, and thinking of recapping the main board. Do I need audio grade caps for that (since it's a digital synth)? Any caps on the analog outputs?
You'd need to look at the schematic and see how each capacitor is being used. If it's used for an audio signal, you'll want to use audio grade caps.
Thanks. I know there are also low leakage caps available. Should I use these for non-audio caps or is it waste of money?
It totally depends on the circuit. The circuit's usage of the capacitor will dictate which properties would be important for the capacitor. For a S&H capacitor, low leakage is important. But that would all be digital on the DX-7.
Anyone knows where I can buy that cr2032 for DX7 in Canada?
Nobody wants to ship it to Canada. I have checked a number of websites including Ebay.
Even Mouser in Canada doesn't ship it in Canada because it is lithium battery.
Look on eBay or similar for "CR2032 battery holder", then you can solder the battery holder in and use a plain old CR2032 from a local store.
You are so helpful. I actually found CR2032 battery holder on Amazon.ca
Tomorrow, I will visit Radioshack just in case. If not, will order from Amazon.ca
I actually liked idea of holder.
Thanks again!
Have you ever replaced the aftertouch felt on a DX7? Mine is very torn up. I've been searching for a while and can't find replacement parts anywhere. If replacement is possible this could be a great item for sale on your website.
Syntaur carries this and more too
Es la mala hostia de poner la batería con un acceso imposible,tener que soldar ,etc.
What is the battery for? found one inside a Oberheim. Great video!
To save some settings
This video is important. Is there a way to download it for when my dx7 inevitably goes down?
Hey buddy, nice video! I've got to change mine that has all of Bo Tomlyn's sounds he programmed for Michael Jackson in it. When you pull the battery did you lose the internal RAM? I still have my Commodore 64 Computer with 10,000 sounds, I never converted all the sounds to MacBook. ua-cam.com/video/-m29nyMpRxk/v-deo.html lol. not sure how to store them before I would pull it. I got 4 ram cartridges and thinking of selling it with custom case for $750 , it has the "Special Edition" board with LED. thoughts?
The process is called soldering..pronounced soul-dering with soul-der, not soddering with sodder!
Maybe in your part of the world, but not in mine. Look it up. www.dictionary.com/browse/solder
I worked for Intel soldering boards for years and in the states we say soddering. 😊