have two RCA digital converter box's (adapters). both work fine, but one control is giving me frequent 'won't work problems. my background is electronic repairs, so the obvious service, battery , etc are done. code date is 2008 and am apprehensive to pry apart and destroy unit or circuitry. any help or advice is appreciated. ssenior with limited funds.!!. pfsilansky@aol.com Perry F. Silansky 17 Greenbriar Dr. Farmington, Ct. 06032