I have a Tascam 644 that I purchased new in 1991. It has been in storage since about a month of use during that year.
I just had the battery replaced (August 2019), and all functions appear to be working with the exception of not being able to pan any input source or signal to the right. Only left channel signal is shown in the output LED display. Panning any input source in any channel to the right just gradually lowers the left channel input in the output LED as expected, but no reciprocal level ever appears in the right channel meter or monitors.
All playback options and panning functions work normally.
If I pan any input signal fully right, there is no level in the monitor speakers or headphones. Pressing the Mono switch returns sound to both channels if pans are set to left, or center, but that level fades as I continue panning right and disappears completely when set fully to the right.
So, can I assume the best and hope that some circuit board connection was disturbed when the battery was replaced, or should I be prepared for some kind of component failure? I have the service manual and may be inclined to get inside and check connections it I knew which board and connections were likely to be the problem.
Hard to tell, I know, from this brief description, but since this recorder has had so little op time, I'm hoping it's something simple. I think I've ruled out any routing and settings issues, but I'd love to know if I've missed any.
Thanks for any thoughts or suggestions.
-rnrs
I just had the battery replaced (August 2019), and all functions appear to be working with the exception of not being able to pan any input source or signal to the right. Only left channel signal is shown in the output LED display. Panning any input source in any channel to the right just gradually lowers the left channel input in the output LED as expected, but no reciprocal level ever appears in the right channel meter or monitors.
All playback options and panning functions work normally.
If I pan any input signal fully right, there is no level in the monitor speakers or headphones. Pressing the Mono switch returns sound to both channels if pans are set to left, or center, but that level fades as I continue panning right and disappears completely when set fully to the right.
So, can I assume the best and hope that some circuit board connection was disturbed when the battery was replaced, or should I be prepared for some kind of component failure? I have the service manual and may be inclined to get inside and check connections it I knew which board and connections were likely to be the problem.
Hard to tell, I know, from this brief description, but since this recorder has had so little op time, I'm hoping it's something simple. I think I've ruled out any routing and settings issues, but I'd love to know if I've missed any.
Thanks for any thoughts or suggestions.
-rnrs