Let's see if that keeps the memory overnight. I removed the battery completely BATTERY CHECK showed 4.3V! Looks like it might be my soldering or bad wires. BUT the next day, I switched on my DX7 to my disappointment, the internal memory is corrupt again and to my surprise BATTERY CHECK showed 4.3V ? Why would the BATTERY CHECK show 3V after replacement and 4.3V the next day?Īny pointers of what may be happening? UPDATEĪ minute ago the BATTERY CHECK was showing 3V again. On my second attempt, I removed the mainboard again and this time, I added more solder to look like on the picture on the blogĬlosed the DX7, powered it and BATTERY CHECK showed 3V!!! YEAH! I had also noticed that and I had bridged the battery pin to the diode. Unregistered : HeliFreak > R/C Electronics Support > JR and Spektrum Radios and Electronics > 2. The trace coming off of the positive terminal of the battery that was supposed to connect to the next component had a gap in it in this kind of shape: -||. That's when I decided to give my soldering another go. BATTERY CHECK showing 4.5V instead of 3V. I read further and the first comment of the blog page, Kevin described my issue. BATTERY CHECK showed 4.3V ? instead of 3V. I thought I had resolved it but an hour later the presets were scrambled again. I turned ON/OFF the DX7 + un/plugged it and checked the INTERNAL MEMORY and the presets were there. I loaded the new presets (using MIDI/USB interface) and all looked fined. The DX7, a classic FM synth, gets a make-over with three significant updates. I closed DX7 but I didn't do the BATTERY CHECK, so I don't know if showed correct. On my first attempt, I soldered the battery to 2 wires instead of directly soldering to the board, in order to allow the operation to be easier the next time if needed. I followed the instruction found on the NEGATRON BLOG I ordered a 3V - CR2032 solder pin for Yamaha DX7 found on eBay. Everything you need to know about the worlds best-selling synthesizer. So I decided to attempt the battery change. This operation restored my internal memory, but the next day the presets were gone again and the label were scrambled. You must then see MIDI RECEIVED on your DX7/TX7 display (transfer is OK).Choose "SysEx send" (or the appropriate option) on your SysEx transfers program.Run your SysEx transfers program on your computer and load or open (depending on the program you are using) the SysEx file you want to transfer.With a Cahaya Midi USB Interface 5 Pin Din Plug Cable for PC/Mac
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