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HP245 garbled audio jack output
#3026184 09/17/20 11:18 PM
Joined: Oct 2019
Posts: 4
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My HP245 has one audio output jack silent and one screaming with nothing but loud static. I cannot find any service information and the unit is too big to bring to a service center. I suspect that one or more op-amp(s) may be at fault, however, without schematics or at least wiring diagrams, one would be limited to trying to reverse-engineer based only on visual inspection of the circuit boards. This is a long shot, but does anyone know of service notes or such? (The speakers and the headphone signals work just fine).

Re: HP245 garbled audio jack output
Brian Hagen #3026194 09/18/20 12:18 AM
Joined: Sep 2009
Posts: 12,414
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Do you get proper sound from the speakers?

Also, given that this is a 1997 model ... it might be hard to find the service manual online. I could not find it.
You might try to contact Roland. Maybe they have the manuals. (I know Yamaha does. I bought direct from their California parts depot.)

Roland is at 5100 S. Eastern Ave, Los Angeles, phone 323-890-3700
Product support is at 323-890-3740

Re: HP245 garbled audio jack output
MacMacMac #3026291 09/18/20 07:59 AM
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Hello: yes, the speakers work fine. Thanks for the phone numbers :-)


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