joe, it was leakage in q695. what threw me was when i shorted q693 base to ground the set worked. so i assumed all after that was ok.
Joe Tech2004 wrote: > > Larry, > The one you got fixed..... What was it..... shorting q-693 base to > ground...??? ........"joe" > ================================= > [EMAIL PROTECTED] From: [EMAIL PROTECTED] (larry) Date: > Wed, Jan 7, 2004, 6:07pm To: [EMAIL PROTECTED] (ELECTRONICS > PROFESSIONALS LIST) Subject: Re: [Techs] Sanyo ds31590 standby > Reply to: [EMAIL PROTECTED] (ELECTRONICS PROFESSIONALS LIST) > thank you for the tips, guys. > i got one fixed but the other may need the little 3 pin IC, so i will > order it. > thanks again, > Larry > > [EMAIL PROTECTED] wrote: > Larry, > >From Tech Repair CD: > Sanyo\DS31590\Dead\Touching the DVM probe to pin 27* power on* of IC801 > MPU turned set on with no vertical. Checked pin 25 of IC801 reset and 5V > was not present\\\Q831 2SA1015 reset transistor not turning on. It > tested good but was the problem.\\\\\\\\ > Sanyo\DS31590\Dead no relay click\could short Q681 (2SC1740) collector / > emitter switch drive* then could start tv and every thing OK\\\Q681* > R628 (1200 ohm)* D680 (ECG519)*C683 220mfd\\\\\\\\ > Sanyo\DS31590\Dead. Hot Shorted\\\\Q402 (Ecg2331)*Q605 (Ecg290a)*D610 > (Ecg519)*R603 (100k)\\\\\\\\ > Sanyo\DS31590\Dead. Was Shutting Down Periodically Before Dead\\\\Hot B+ > Was Under 100v At Power On* 80v In Stand-By. Stand-By 80v Was Ok* But > Flyback Was Pulling Down Hot B+ At Turn On.\Fly Rang Good. L40a00711(645 > 018 9579)\\\\\\\ > Sanyo \DS31590\DEAD-lightning\\\\Repaired primary side*Q601*Q604*Q605 > all shorted-also had caps C609 blown apart and C626 bulged like a > baloon\Replaced IC601even though it checked ok.\Found Q695 leaking. > Q695 is 2SA608F. Replaced it with a TCG290A\\\\\\ > Jeff Dougherty > Intrepid Video TV/VCR > 263 S Front St > Steelton PA 17113 > fax...717-564-4952 > www.intrepid-video.com www.tech-repair.net > ----- Original Message ----- > From: "larry" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, January 06, 2004 2:49 PM > Subject: [Techs] Sanyo ds31590 standby > i replaced shorted SMP output and drive transistor. now it starts but > runs only in standby half voltages. as per a tip i shorted q-693 base to > ground and the set plays fine. > > i cant find any shorted diodes or transistors. this must be a common > problem with this model. i have 2 here with the same symptom. > any help appreciated > thank you, > Larry > -- > Schneider TV & Electronic Inc. > 5415 N. Wooster ave. > Dover, Ohio 44622 www.geocities.com/schntv2000/ > 330-343-0768 FCC. first class & Extra class K8WLY > _________________________________________ > Please include original text when replying to this email. Once you get > your unit repaired, please post the fix to the group. Order your tech > repair CD today, Version 3.0 only $49.00-more monitor tips-user friendly > program. > [EMAIL PROTECTED] www.tech-repair.net > ______ > Techs mailing list > [EMAIL PROTECTED] > http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com Go > to the link above and scroll to the bottom to enter your email address > -- > Schneider TV & Electronic Inc. > 5415 N. Wooster ave. > Dover, Ohio 44622 www.geocities.com/schntv2000/ > 330-343-0768 FCC. first class & Extra class K8WLY > _________________________________________ > Please include original text when replying to this email. Once you get > your unit repaired, please post the fix to the group. Order your tech > repair CD today, Version 3.0 only $49.00-more monitor tips-user friendly > program. > [EMAIL PROTECTED] www.tech-repair.net > ______ > Techs mailing list > [EMAIL PROTECTED] > http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com Go > to the link above and scroll to the bottom to enter your email address > > Joes....Electronics > (Joe:Tech/2004) > [EMAIL PROTECTED] > Fax::509-479-2283 > > _________________________________________ > Please include original text when replying to this email. > Once you get your unit repaired, please post the fix to the group. > Order your tech repair CD today, Version 3.0 only $49.00-more monitor > tips-user friendly program. > [EMAIL PROTECTED] www.tech-repair.net > ______ > Techs mailing list > [EMAIL PROTECTED] > http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com > Go to the link above and scroll to the bottom to enter your email address -- Schneider TV & Electronic Inc. 5415 N. Wooster ave. Dover, Ohio 44622 www.geocities.com/schntv2000/ 330-343-0768 FCC. first class & Extra class K8WLY _________________________________________ Please include original text when replying to this email. Once you get your unit repaired, please post the fix to the group. Order your tech repair CD today, Version 3.0 only $49.00-more monitor tips-user friendly program. [EMAIL PROTECTED] www.tech-repair.net ______ Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com Go to the link above and scroll to the bottom to enter your email address
