LeRoy,I don't know how much here is duplicated,but I sent all I find on this model regarding any video failures.Sorry I don't seem to have a scemo. HTH. Model Number: CS-35401 Symptom: NO PIP VIDEO Cause #1 1. CHECK C7026, AND C7036 BOTH 4.7 UFD 35 V PART # 181P504090 ON THE PIP PCB. 2. SUSPECT SUB-VIDEO SWITCH IC2002 (LA7956) PART # 272P394010. LOCATED ON PCB-VIDEO. USE FOLLOWING LOGIC CHART TO CONFIRM: LOGIC PIN INPUT PIN 2 3 * HIGH = 5V TUNER 4 H H EXT 1 6 L H EXT 2 8 H L S-VHS 9 L L Model Number: CS-35401 Symptom: NO VIDEO Cause #1 1. NO MAIN VIDEO,THERE IS VIDEO IN PIP ON EXT1 AND EXT2:-CHECK FOR 1VPP OF LUMINANCE ON PIN 1 OF IC7000, IF MISSING OR LOW CHECK THE VALUE OF C7001 (4.7UF 35V), LOCATED ON THE PIP-PCB.THIS CAP MAY LEAK ELECTROLYTE ONTO THE BOARD AND OPENED A FEED THROUGH IN THE PATH BETWEEN C7001 POSITIVE LEAD AND THE EMITTER OF Q7003 OR CAUSE INTERMITTENT COLOR. PT#181P504090. (CHECK ALL 'SMD' ELECTROLYTICS AND TRACES ON PIP) 2. NO MAIN OR PIP VIDEO, CHECK C7014, 47 UFD 16V ON THE PIP PCB. PART # 181P502060 3. CHECK FOR 7.2V DC ON THE BASE OF Q7003,IF LOW OR MISSING.CHECK THE VALUE OF R7002 (150 OHM 1/10W).LOCATED ON THE PIP-PWB. PT#103P401050 Search the Mitsubishi Technical Database Model Number: CS-35401 Symptom: NO VIDEO OR OSD Cause #1 1. CHECK BLANKING PULSE AT IC201 PIN 1. SHOULD BE 8-10VPP. IF LOW, SUSPECT OPEN R585 (1.2 OHM 1.2W). LOCATED ON MAIN PCB AT FBT PIN 5. Model Number: CS-35401 Symptom: VIDEO GOING IN AND OUT Cause #1 1. TUNER VIDEO AND SOUND CYCLES BACK AND FORTH FROM CORRECT VIDEO AND SOUND TO SNOW. CHECK C713 (4.7UF NP 50V) ON MATRIX-PWB. Model Number: CS-35401 Symptom: LP MODE INOP W/EXT INPUTS Cause #1 1. WILL RESUME OPERATION AFTER POWER LOSS ONLY WITH TUNER INPUT. REPLACE IC701 WITH NEW VERSION. PT# 274P157060 UPD17008CW-526 Model Number: CS-35401 Symptom: NO PIP VIDEO Cause #1 1. CHECK C7026, AND C7036 BOTH 4.7 UFD 35 V PART # 181P504090 ON THE PIP PCB. 2. SUSPECT SUB-VIDEO SWITCH IC2002 (LA7956) PART # 272P394010. LOCATED ON PCB-VIDEO. USE FOLLOWING LOGIC CHART TO CONFIRM: LOGIC PIN INPUT PIN 2 3 * HIGH = 5V TUNER 4 H H EXT 1 6 L H EXT 2 8 H L S-VHS 9 L L Model Number: CS-35301 Symptom: BLACK PIC. WTH. PIP Cause #1 1. BLACK PICTURE WITH PIP ACTIVE:-CHECK FOR A LEAKY OR SHORTED Q710. LOCATED ON THE CATHODE OF D708 ON THE MAIN-PCB. PT#260P582010 Model Number: CS-35301 Symptom: NO VIDEO NO OSD Cause #1 1. CHECK BLANKING PULSE AT IC201 PIN 1. SHOULD BE 8-10VPP. IF LOW, SUSPECT OPEN R585 (1.2 OHM 1.2W). LOCATED ON MAIN PCB AT FBT PIN 5. Model Number: CS-35301 Symptom: DELAY WHEN SW TO EXT VID Cause #1 1. HAPPENS WHEN SWITCHING FROM ANTENNA VIDEO INPUT TO EXT VIDEO INPUT. DELAY IS APPROX 8-10 SECONDS. REPLACE C713 ON MATRIX PCB (4.7UF, 50V NON-POLARIZED). Model Number: CS-35301 Symptom: NEGATIVE PIX Cause #1 1. CHECK FOR LUMINANCE ON PIN 41 OF IC201 IF MISSING OR LOW REPLACE DL202 LOCATED ON THE MAIN-PCB. PT#337P113020 Model Number: CS-35301 Symptom: VIDEO GOING IN AND OUT Cause #1 1. TUNER VIDEO AND SOUND CYCLES BACK AND FORTH FROM CORRECT VIDEO AND SOUND TO SNOW. CHECK C713 (4.7UF NP 50V) ON MATRIX-PWB. Number: CS-35301 Symptom: BLANK SCREEN ON TUNER INP Cause #1 1.NO VIDEO ONLY A BLANK SCREEN ON TUNER INPUT,ON EXTERNAL INPUT SCREEN GOES WHITE AND SHUTSDOWN.CHECK C511 (.15UF 50V) ON PIN 46 OF IC201.ON THE MAIN-PCB. Model Number: CS-35301 Symptom: NO VIDEO Cause #1 1. NO MAIN VIDEO,THERE IS VIDEO IN PIP ON EXT1 AND EXT2:-CHECK FOR 1VPP OF LUMINANCE ON PIN 1 OF IC7000, IF MISSING OR LOW CHECK THE VALUE OF C7001 (4.7UF 35V), LOCATED ON THE PIP-PCB.THIS CAP MAY LEAK ELECTROLYTE ONTO THE BOARD AND OPENED A FEED THROUGH IN THE PATH BETWEEN C7001 POSITIVE LEAD AND THE EMITTER OF Q7003 OR CAUSE INTERMITTENT COLOR. 2.NO MAIN OR PIP VIDEO, CHECK C7014, 47 UFD 16V ON THE PIP PCB. PART # 181P502060 3. CHECK FOR 7.2V DC ON THE BASE OF Q7003,IF LOW OR MISSING.CHECK THE VALUE OF R7002 (150 OHM 1/10W).LOCATED ON THE PIP-PWB. PT#103P401050 Model Number: CS-35301 Symptom: NO PIP VIDEO Cause #1 1. CHECK C7026, AND C7036 BOTH 4.7 UFD 35 V PART # 181P504090 ON THE PIP PCB. 2. SUSPECT SUB-VIDEO SWITCH IC2002 (LA7956) PART # 272P394010. LOCATED ON PCB-VIDEO. USE FOLLOWING LOGIC CHART TO CONFIRM: LOGIC PIN INPUT PIN 2 3 * HIGH = 5V TUNER 4 H H EXT 1 6 L H EXT 2 8 H L S-VHS 9 L L Model Number: CS-35301 Symptom: BLACK SCREEN AND NO OSD Cause #1 1. BLACK SCREEN NO OSD AND THE AUDIO IS O.K.AT TURN ON MONITOR PIN 29 OF IC701 FOR 0 VDC,IF THIS INCREASES.DISCONNECT PIN 29 AND MONITOR THE PIN FOR 0V,IF MORE THAN 0V,REPLACE IC701.LOCATED ON THE MAIN-PCB 2. CHECK BLANKING PULSE AT IC201 PIN 1. SHOULD BE 8-10VPP. IF LOW, SUSPECT OPEN R585 (1.2 OHM 1.2W). LOCATED ON MAIN PCB AT FBT PIN 5. Phil Phil Bader, Pres. Jan Phyl TV Inc Winter Haven, Fl (863) 299-8821 estab. 1976 ----- Original Message ----- From: LeRoy Westlund <llw@xxxxxxxxxx> Date: Saturday, July 30, 2005 11:00 am Subject: [TechAssist] [Update] Mitsubishi CS-35401 Video comes and goes - Sound stays. > The PIP looked bad, with leaking fish caps, so I done the bypass > anyway,...but,...it didn't help with my problem. > I need to troubleshoot the Video switching ckts., but I don't have a > schematic of that area. Can anyone provide me with a pdf. file for > the Video > switching ckts., or at least tell me which IC , and part number I > need to > check ? > > Thanks again, > LLW > > LeRoy Westlund > Westlund TV & Electronics > 97 North Main " I forgot,..to remember,.. > Centerfield, UT 84622-0087 to forget " > Ph./Fax 435-528-3822 > mailto:LLW@xxxxxxxxxx > > -----Original Message----- > From: Carol Rundle <brundle@xxxxxxxxxxxxx> > To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx> > Date: Friday, July 29, 2005 3:05 AM > Subject: [TechAssist] Re: Mitsubishi CS-35401 Video comes and goes > - Sound > stays. > > > >Leroy, > > Sure sounds like PIP , c7001,4.7@35v. ,also open',corroded, > connection at > + side of c7001,If not there, > > Might try heating , cooling cap's on A/V jack panel, (hair drier). > > > > Bill, > > Bill's TV > > Sonora,Calif. > >LeRoy Westlund <llw@xxxxxxxxxx> wrote: > >This set has a good ,stable picture when using Ant-A or B. > >Everytime I select External-1, or External-2, it takes about 45 > seconds to > 2 > >minutes, before the picture shows up. It just has a black screen > with OSD > >OK. > > > >Sometimes the video will go away while watching it for a while. > It is > >completly unpredictable. Tapping on PIP module, or using freez- > spray has no > >effect. > >It will go bad every time, when I switch inputs from Ant-A or B, > and back > to > >Externals 1 or 2. > > > >I think the PIP module is OK, cause the problem only shows up on > external>inputs. > >Should I try a PIP bypass first, anyway ? > > > >Could it be that the Video switching IC is bad ? If so,...what is > the ckt. > >designation, and part number ? > >Is it located on the Video input jack board ? > > > >Do any of you have any tips for a problem of this nature ? > > > >Any help is appreciated, > >LLW > > > >LeRoy Westlund > >Westlund TV & Electronics > >97 North Main " I forgot,..to remember,.. > >Centerfield, UT 84622-0087 to forget " > >Ph./Fax 435-528-3822 > >mailto:LLW@xxxxxxxxxx > > > > > >------------------------------------------------------------------ > --------- > -- > >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/> > > > >Carol Rundle > >brundle@xxxxxxxxxxxxx > > > > > > > >------------------------------------------------------------------ > --------- > -- > >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.htmSet Vacation > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacationLost 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/