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Noted with thanks Flo Will keep all posted Wish you a great day KRRaj

Before you start cleaning, check with an oscilloscope or an audio probe, whether there is sound at the input of the volume potentiometer.

Hi FloThat may be possibleHow to clean?KRRaj

Hello Raj, then the issue is NOT(!) the patches lost. And quite likely it is not the battery. Since you seem to be from Mauritius my first suspicion is based on the the sea climate: corroded jacks

Hi BrianIn case patches lost , pls advise how to recover?Kind regardsRaj PsI will try head ph and keep you posted

Hi Florian?No Kind regardsRaj

P.S. I have similar tables for Yamaha FB01, DX100/21/27/TX81Z etc. and Reface DX. Somewhere hidden in my messy harddisk archives. The LFO speed range from the FB01 is insane if I remember correctly

Some more notes about BPM and LFO speed from Daniel's table: 1. Depending on the rhythmical effect you want to obtain it can be required to multiply or divide the BPM number by a whole number like 2

Hello Raj, does the init-Sound work? Regards Florian Am 18.04.24 um 07:08 schrieb raj juggapah via groups.io:

Hi Raj, it won't be the battery I think or you'd have lost all your patches. Try headphones first than maybe check a patch to make sure the operators aren't set to 0 output. Brian.

Exactly Daniel. This was indeed what I was looking for. Thanks a lot!!!

Dear All World Class Musicians Owners of DX7 I have one DX7 Keyboard that was off the power grid for more than 5 years. Switched On all functions appear normally on the screen Sound ....none ......is

Yes, this is general fact. But I suppose he wants to know the relation between DX7 parameter value and BPM, Hz, msec. Here is a table… Daniel Forró

LFO is measured in cycles per second (Hz). 60 seconds in a minute, so: One cycle per second (Hz) = 60 BPM Therefore LFO x 60 = BPM BPM/60 = LFO Hz 120BPM/60 = 2hz Sent: Wednesday, April 17, 2024 2:40

Hi Martin, I can not find the file with the LFO speed BPM relation. Would it be possible to re send it or send a link or something? It would be really helpful. Thanks a lot in advance!!

Hi Martin, I can not open the file. Any chance of sending a new link/re upload the file? Thanks a lot in advance.

Given where it was designed and built, ALL screws on the DX-7 will be metric, not imperial.

FYI in case anyone was wondering, I ended up having success with #6 3/8” length stainless steel 18-8 sheet metal screws to fasten the DX7 mk1 front panel to the side cheeks. Eg from bolt depot:

Glad I could help. Daniel F

Daniel/Bruce - This is exactly what I was looking for. ?Many thanks to you both! Ron