Hello All, We're in a quandary here. Have a Sony Vertical Consol that works quite well, has excellent B&W tracking (grey scale) but has a beat pattern running through picture when colour is added. the pattern is in the background and is bothering the customer who in turn is trying to pressure us. we don't have the service manual for this set and are seeking something close. we suspect that the fault may be in chroma circuit but without schematic are having difficulty pinpointing the fault. set initially came in dead and was repaired for that and has been working for about 10 weeks. as we are between the proverbial rock and hard place we wondered whether anyone might offer any suggestions (without being overly facetious). we thank you all for your consideration Peter Kowalik pe.kow@xxxxxxxxxxxx Keith's stereo burl Ont ***************************************************************************** The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.html Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.htm Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: //www.freelists.org/archives/techassist/