LA7838 is correct. Look for bad traces around that IC, they are very common. ----- Original Message ----- From: <Ttkirkpat@xxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Tuesday, November 26, 2002 4:21 PM Subject: [TechAssist] Mitsubishi projection model TS-4573- no vertical sweep > Vertical ic401 has a hole in it- I believe it is an LA7838 but do not have > service manual to verify. I put one in and replaced the 4 vertical filters. > I still have no vertical sweep. Pin 1 and 8 which are power sources for the > LA7838 read low- pin1 is 8vdc and pin 8 which normally would be about 24vdc > is only about 10vdc. Thanks for verification of part number and assitance as > to why I still have no sweep > > > ------------------------------------------ > 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/ > ------------------------------------------ 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/