I have a customer with a Sony KV27TX40 (October 1989) that had a dead set. When I went to her home, pulled the chassis back, and began to turn it on the side I heard something falling. It turned out to be cement power resistors (ref# R605 and ref# R650) had apparently been so hot the cement was crumbling apart and falling off. I do not have any service literature for this vintage Sony. Therefore since there was no visible evidence of the values of these resistors, I could use some help with parts ID and any suggestions you may have:
These are the parts I have found defective and also intend to replace by design as they are common failures: C551 (0.47mfd/50v) C602 (560mfd/200v) (rounded on the top) C605 (22mfd/250v) IC601 (STR3035) Q551 (2SD1941) (which is shorted) R602 (1.8 ohm, 10 watt) R605 (unknown cement power resistor) R650 (unknown cement power resistor) RY601 T504 (1-439-372-13) I am aware of the 2SD1941 service bulletin # 161R2 for replacement of the 2SD1941 with a 2SC4927-01 along with resistor R523 but don't see this model included in the bulletin so I don't know if it applies or not. Bob Waterman, CET� #RI-28 Master Technician License #9109 Service Manager / Parts Manager Gemini Computer, TV, & Security Alarms (508)695-7302 (508)695-7769 FAX [EMAIL PROTECTED] [EMAIL PROTECTED] www.geminicomputertvsecurityalarms.com _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
