Jeff, Pick up a Sams for the set.....no need to guess ! Sams 2769 -2 I'm sure someone out here in the tech group has a copy they will share. Jeff Stielau Shoreline Electronics Repair 125 Beech Tree Lane Westbrook, CT 06498 860-399-1861 860-664-3535 (fax) jstielau@xxxxxxxx ----- Original Message ----- From: "Tech Repair CD support" <support@xxxxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Sunday, October 27, 2002 11:09 PM Subject: [TechAssist] 2nd request*Sharp 27RV79, dead, relay clicks > > Original message below. > One more try before I give up on this one. > All three regulators on main board are OK. > I'm missing the 9vdc and 12vdc for the jungle chip. I'm having trouble tracing > back the 12vdc. > Raw B+ is high, around 160vdc, Regulated B+ is low, around 106vdc, which changes > when I adjust AC voltage. > There is no signal to the HOT. > SCR tests fine as well as it's zener. > My only guess is FBT, which rings OK, maybe be breaking down under load, but too > expensive to replace. > I removed the HOT and 106vdc did not change. I did remove the FBT to test and it > rings just fine. > On regulator IC, I don't have the 18vcc on pin 7. > If anyone has any other ideas, I'm all ears. > > > Jeff > FAX 717-564-4952 > Intrepid Video & Electronics > 501 Luther Rd > Harrisburg PA 17111-2055 > Be careful of your thoughts. > They may become your words any moment. > Order your tip CD today. Filled with TV, VCR, camcorder tips and more. > Version 3.0, ready, with more tips, user friendly program. > $49.00 for CD, plus first year of tip updates. > sales@xxxxxxxxxxxxxxx for more info > www.tech-repair.net www.intrepid-video.com > www.thetoolcaddy.com www.9-11-2001tragedy.com > ******************************************************************** > > ----- Original Message ----- > From: "Tech Repair CD support" <support@xxxxxxxxxxxxxxx> > To: "Techsonline" <techassist@xxxxxxxxxxxxx> > Sent: Thursday, October 24, 2002 10:28 PM > Subject: [TechAssist] Sharp 27RV79, dead, relay clicks > > > > This set still has me stumped. > B+ is low, 105vdc, I've checked all resistors, diodes and caps and can find no > problems. > The relay click when I press power. I ruled out the relay as being the problem. > D2713 cathode is 161vdc, s/b 148vdc > FBT pin 9 = 105vdc > I can find no problem components. Has anyone found anything on this chassis to > break down under load, possibly? > Thanks for any suggestions. > I do have a schematic, but still have problems > Jeff > > FAX 717-564-4952 > Jeff Dougherty > Intrepid Video & Electronics Be careful of your thoughts. > 501 Luther Rd They may become your words > Harrisburg, PA 17111 any moment. > 717-909-8844 > VCR tips, electronics info & general interest. > www.intrepid-video.com www.tech-repair.net > www.thetoolcaddy.com www.9-11-2001tragedy.com > *********************************************************************** > > > ------------------------------------------- > Introducing NetZero Long Distance > Unlimited Long Distance only $29.95/ month! > Sign Up Today! www.netzerolongdistance.com > ------------------------------------------ > 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/ > > > ------------------------------------------- > Introducing NetZero Long Distance > Unlimited Long Distance only $29.95/ month! > Sign Up Today! www.netzerolongdistance.com > ------------------------------------------ > 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/