Labels:book | bulletin board | chat room | monitor | reckoner | sky OCR: KENWOOD SB-981 SERVICE BULLETIN AMATEUR RADIO STBJECT DATE TH-77A MEMORY LOSS WITH LOW BATTERY PACK 02/ /06/91 Some the TH-77A handhelds in serial number range S/N 206XXXXX in term tently lose memory when the NiCad battery pack becomes discha rged The fol low ing mod ficati ion will correct th is cond ts ion TH-77A transce ivers in serial number range S/N XXXXXXXX and above will incorporate change in the microprocessor to prevent this conditi on This mod ficati on requires the abili ty LC desolder sUr face mounted m cro- mini iature chip resis tor from flex PC you do not remove m cro- niniature chip resistors from PC boards equl basis DO NOT attempt this modificati on Be sure remove the battery termi inal plate in step the battery e Tm on the ransce (only rews removed th 10x cable CTCSS un ...
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