MATRIXSYNTH: Roland TR-909 v4 Upgrade EPROM Chip with Timing Fix

Wednesday, September 20, 2017

Roland TR-909 v4 Upgrade EPROM Chip with Timing Fix

via this auction. See the seller's other items for more.

"Upgrades your TR-909 to the latest OS
International buyers shall be responsible for all customs, levies or VATS imposed by their country.

Included in this listing:

1 TR-909 v4 EPROM upgrade chip
1 28 pin socket

TR-909 drum machine is not included in this auction, only the 2 items above.

About this upgrade: v4 is the latest TR-909 OS. It fixes MIDI sync problems in previous versions.

To check your 909's OS: power on the unit while holding down the "Track 1" button. One of LED's 1-4 will illuminate, indicating your version # 1-4.

Installation: de-solder the old chip, taking note of the notch on one side of the chip, solder in the new socket and insert the new v4 chip into the socket with notch facing same direction as old one.

If you aren't experienced with eletronics work it is recommended that you have someone who is do it for you.

EPROM and socket will be shipped in an anti-static packaging."

synth upgrades including: Waldorf Pulse Firmware 2.01 EPROM Upgrade, Ensoniq ESQ1 OS 3.50 Latest OS EPROM Firmware, Nord Lead 2 Firmware Upgrade v1.06 EPROM Latest OS, & Ensoniq ESQ1 V3.5HW Hidden Waves EPROMs.

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