Dave, If that IC comes in a SK bag...do not use it and get a OEM one, or one from Tritronics, Excel or Prelco.. 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: "David Lessard" <mr_fixit@xxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Monday, December 08, 2003 2:21 PM Subject: [TechAssist] Re: Zenith TV Z35X21D - Dead/Intermittent Dooh...forgot to note QX3401 transistor orientation, (I think the transistor front was facing the SMPS transformer, could anyone confirm this please. I did order a new STR53041, (just in case). BTW the HOT checked OK. Queston: Wouldn't a defective flyback cause the HOT to short before stressing out the power supply (and ruining those components mentioned)? Thanks. David Lessard Alexandria Electronics 50 Harrison Street Alexandria, Ontario K0C-1A0 mr_fixit@xxxxxxxxxxxx -----Original Message----- From: techassist-bounce@xxxxxxxxxxxxx [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Bob@Bobs tv Sent: Monday, December 08, 2003 2:09 PM To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: Zenith TV Z35X21D - Dead/Intermittent David, Replace the transistor and the IC together...note how transitor comes out as some of the boards are marked WRONG......Part #'s on my precious post..No voltages on print for the regulator. You may need these parts listed, Make sure the output transistor is not shorted.....You could also have a bad fly.. RX3406 and 07 47/1W RX3403 15/3W RX3409 4.7 1/2W RX3408 22/1/2W D3406,07,09 103-344-02A Hope this helps Bob, Bobs TV Worcester, ma woodman1@xxxxxxxx Main 508-853-1482 Fax 508-853-1480 ----- Original Message ----- From: "David Lessard" <mr_fixit@xxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Monday, December 08, 2003 1:52 PM Subject: [TechAssist] Re: Zenith TV Z35X21D - Dead/Intermittent > I just got back from the customers home. CX3416 checked good, replaced > it anyway. Qx3401 shorted C-E, front popped off. RX3406 burnt (beyond > recognition). Not sure if ICX3431 is dead, main fuse is still intact. > Does anyone have a good one kicking around so that I may compare pin to > pin readings? Is it possible that ICX3431 is still functional? How could > I check this? Thanks in advance. > > David Lessard > > Alexandria Electronics > 50 Harrison Street > Alexandria, Ontario > K0C-1A0 > > mr_fixit@xxxxxxxxxxxx > > > -----Original Message----- > From: techassist-bounce@xxxxxxxxxxxxx > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Bob@Bobs tv > Sent: Monday, December 08, 2003 12:49 PM > To: techassist@xxxxxxxxxxxxx > Subject: [TechAssist] Re: Zenith TV Z35X21D - Dead/Intermittent > > David, > When you first check the set, with set off check for 130V at the > collector of horizontal output.. {I use tuner ground} if its there. The > 22uf > and 100uf in the power supply should take care of this.. If the 130V is > missing you have other problems. Listed below are most common faults > CX34123 22uf/63 > CX3416 100/25>>>sub to at least 50V > RX3404 180K 1/2W > QX3401 121-3401 > IXC3431 223-28 > If you want me to send a JPEG of power supply let me know.. > Bob, > > Bobs TV Worcester, ma > > woodman1@xxxxxxxx > > Main 508-853-1482 > Fax 508-853-1480 > ----- Original Message ----- > From: "David Lessard" <mr_fixit@xxxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Monday, December 08, 2003 11:55 AM > Subject: [TechAssist] Zenith TV Z35X21D - Dead/Intermittent > > > > Gentlemen, > > > > I need to gather components before visiting this sick TV. Customer > > indicates TV was intermittent before finally failing altogether. When > > intermittent shutdown did occur, shutting off the TV for 30 minutes > > would allow it to fire back up. This sounds like a capacitor acting up > > but which one(s) and now that the TV is dead - dead, what else should > I > > bring on this job. God Bless America (North & South). Thanks in > advance. > > > > David Lessard > > > > Alexandria Electronics > > 50 Harrison Street > > Alexandria, Ontario > > K0C-1A0 > > > > mr_fixit@xxxxxxxxxxxx > > > > > > > ************************************************************************ > **** > * > > Lost Password: > > http://www.tech-assist.org and select "Login Problems?". > > Email Archives: > > //www.freelists.org/archives/techassist/ > > > ************************************************************************ > ***** > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > > ************************************************************************ **** * > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ ************************************************************************ ***** Lost Password: http://www.tech-assist.org and select "Login Problems?". 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