Thanks for the heads up Bob, I had replaced c424 and IC421 but it blew a hole in it at turn on. That's when I started looking at the ZD422. It is leaking. This is a bit more involved than the usual vert problem. That's when I decided to get the schematic.Really appreciate the info. Paul Gemini Computer & TV <geminitv@xxxxxxxxxxx> wrote: That's a 75 volt zener. See the following: JVC Vertical Failure You most likely have all or most of the following components defective in that unit (these are the usual bad components with vertical IC failure in these JVCs) so you better check or replace them all: IC421 (part# LA7832) D422 (part# MTZJ75-T2) D541 (part# RGP10J-5025-T3) R541 (1.8 ohm, 2 watt) C424 (100mfd/35v) C425 (470mfd/35v) 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 geminitv@xxxxxxxxxxx ----- Original Message ----- From: "Paul" To: Sent: Friday, July 22, 2005 3:32 PM Subject: [TechAssist] JVC AV27D302 part value? Till the circuitwork is repaired maybe someone could give me the value of Zener diode D422. It may be D1422 in the parts list. TIA. Paul Paul ,B Central TV&Video 911W Grand Ave Grover Beach Ca. (805)481-8084 ---------------------------------------------------------------------------- - This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/ Paul ,B Central TV&Video 911W Grand Ave Grover Beach Ca. (805)481-8084 ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/