There's not much complexity to a preamp and barring a proprietary chip (doubtful), it's likely repairable and at much less cost than replacement. If you don't know any shop locally, check the manufacturers web site for an authorized service center location. If they don't list one or allow returns to their factory, review similar name brand manufacturers for their authorized service centers and contact them directly. Most of the authorized service centers are not confined to one brand and service multiple brands and it's likely they would accept your unit for repairs even with no warranty involved.

Update:
I looked at SD Systems site and they have contact info for repairs, parts and accessories. Most companies are very accommodating with repairs and the SD line looks to me as if it's of a quality worthy of repair versus replacement.

Last edited by Charlie Fogle; 07/29/20 11:22 AM.
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