RCA Model GMR821TR. Plays great but sound will suddenly jump to peak audio level. Set was manufactured in 1987; do not have schematic on this one. Thanks for your input. Alex Alhelmetag@xxxxxxx ------------------------------------------ To REMOVE your email address, click here: http://www.tech-assist.org/unsubb.html To CHANGE your email address, click here: http://www.techassist.net/forms/change.html ------------------------------------------ ***NEW*** Tips Added Instantly!!!*** Submit Repair Tips here: http://www.tech-assist.org/secure/tip/