Joe, SANYO DS31590 For what it's worth....... "joe" ---------------------------------------------- Text pasted from WinSTIPS 2.0 http://www.ServiceSoftware.com ---------------------------------------------- SANYO � DS31590 Dead Q831 (Reset Transistor) 2sa1015 ---------------------------------------------- SANYO � DS31590 Dead F601 T4a D601-D604 Nte 125 Replace Capacitor 470/200v ---------------------------------------------- SANYO � DS31590 Dead - No Pix Or Sound - Possible Lightning Ic301 Comb Filter P/N: Tc90a44p Due To Lightning. This Ic Was Good But They Are Prone To Get Blown Out From Lightning. This Unit Only Took Out These Two Diodes: D311 Leaky Zenner 4.7 D312 Regular Signal Leaky. ---------------------------------------------- SANYO � DS31590 Dead Set:Lightning/Surge Any/All:D601-4(Two Of The 4),Q601(2sc4423/2sc3277),Q604(2sc3807),Q605 (2sc1815),D612(Tlp621/Pc817/On3131s),Ic601(Se130n),F601(Gma 4a), Ic681 (La78l05) ---------------------------------------------- SANYO � DS31590 Dead, After Surge Replaced Fuse And Rectifiers And Hv Fires, But Brain Dead. Replaced 5v Regulator, Ic681 (Ecg 977) And Got Tuning, Sound, Etc., But Now Won'T Turn Off. Replaced Q681 (Ecg85) And All'S Well. ---------------------------------------------- SANYO � DS31590 Dead, After Surge Repaired Primary Side, Q601, Q604, Q605 All Shorted. Also Had Caps C609 Blown Apart And C626 Bulged Like A Balloon. Set Still Dead. Replaced Ic601 Even Though It Checked Ok. Found Q695 Leaking. � Q695 Is 2sa608f. � Replaced It With A Tcg290a. ---------------------------------------------- SANYO � DS31590 Dead, After Surge Q402 Hot Shorted - D1879 D612 Opto-Isolator Open - Pc817 Q635 - Control Or Driver For Opto C536 Sub Nte 85 Shorted Q695 � � � � � � A608 Sub Nte 290a Shorted Q693 - C536 Sub Nte 85 Shorted Ic681 - 5v Regulator Ic 78l05 Shorted D1901 - 7.5v Zener (Protect Diode I'M Guessing For 5v Protection) Leaking. Note: When Replacing Hot I Strongly Recommend Testing For Regulation Before Powering Set Or The B+ Will Shoot To Over 200v And Destroy Any Hot. This Can Be Done Simply By Leaving The Hot Out Of Circuit And Hooking 40 To 100w Light Bulb From Collector To Gnd And Plugging Set In Without Turning On And Check B+ For 75 To 80v. Then You May Power Set Up If It Will And Check B+ For 130v. ---------------------------------------------- SANYO � DS31590 Dead-(Lightning Strike)-Fuse Blown Q601(C4423 Or Ecg2324),Q604(C3807 Or Ecg2504),Q605(A1015 Or Ecg290a), D612(Pc817 Or Ecg3098),4a Gma Fuse ---------------------------------------------- SANYO � DS31590 Dead-No Relay-Possible Surge Q605(Ecg290a) And Q604(Ecg2504) In Power Supply. ---------------------------------------------- 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 ---------------------------------------------- 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. =============================== [EMAIL PROTECTED] From: [EMAIL PROTECTED] (Joe�Dickerson) Date: Mon, Jan 26, 2004, 10:46am (EST-1) To: [EMAIL PROTECTED] Subject: [Techs] Sanyo DS31580..Chassis 31580-00....shuts down.. Reply�to: [EMAIL PROTECTED] (ELECTRONICS PROFESSIONALS LIST) ������Replaced: ��shorted Q402 (HOT) D1880 ��IC601 STR30130 I have 107 VDC on pin 3 (input) and pin 4 (output) Set will come on for a short term (approx. 5-8 sec.) and shut down. Anyone have a schematic on power supply or been here...done that? Thanks, Joe -- Joe's Tv & Appl. Joe Dickerson Rt 1 Box 3781 Jasper, Texas (409) 384-3325 (409) 384-9298 fax _________________________________________ 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
