Bob, Don't know if these will help you or not, they appear to be some previous posts & replies of yours (maybe not).
Anyway i've been up for past 2 nights trying to catch up on my bs and can barely see, but if you can decipher through all the writing they may be of some help. Hope so. G.L. "joe" ================================= Sony KV32XBR95S Now the set powers up but without any picture at all. Sony KV32XBR95S TV had a good picture, until it stopped powering up. I found a shorted diode in the audio section and replaced that. � Now the set powers up but without any picture at all.� Sound is fine. � The picture tube and the associated drivers look fine, but there is no video signal.� Tracing back, I see the video jungle chip isn't putting out anything but it looks like it does not have the proper inputs.� Tracing further, it looks like there is something amiss on the "P4" board - which is the COMB filter.� Service manual shows a part number 1195-065 for the board, and the board has both 1195-054 and 1195-045 stamped on it.� The schematic for the board does not match the circuit on my version of the board, so I cannot really troubleshoot at the component level.� The two ICs on the board are discontinued Sony parts.� I would like to replace the board but Sony says they do not carry a replacement anymore. ================================= If you replaced D1410 in the audio circuit, also replace Ic140 the audio amp and your set will power up once again.� Strange but true!� In the future when looking for help always give the part numbers that you have already changed, it makes it easier to look up the repair. ================================= Sony KV32XBR95S Dead Looks like the set is fixed. I ended up replacing the following components: D604 (D1N20R, Sony part# 8-719-510-48) D610 (same as D604) F602 (3.15 amp Sony part# 1-576-107-22) Q603 (2SC4664NPR, Sony part# 8-729-927-23) Q604 (same as Q603) Q605 (2SD2012, Sony part# 8-729-209-15) Q652 (2SC2785-HFE, Sony part# 8-729-119-79) R623 (8.2 ohm, 1/2 watt, Sony part# 1-212-956-00) VDR602 (Sony part# 1-809-264-71) ================================= I have a Sony KV32XBR95S that is dead. I have found the components listed below defective (so far) but I can't seem to find any obvious shorts or loads. The horizontal output transistors in fine. I do not have the parts I found bad in stock and I just ordered them. Before replacing them and firing the set up, I was wondering if anyone else had encountered this scenario and if there is something else I should be aware of? Here the list of parts I have found bad so far: F602 Q603 Q604 R623 VDR602 Just as a matter of routine on these, I will also be replacing C661 and C662. ================================= Sony http://www.tristatemodule.com/html/sony.html ================================= [EMAIL PROTECTED] From: [EMAIL PROTECTED](Gemini�Computer�&�TV) Date: Thu, Jul 22, 2004, 10:19am To: [EMAIL PROTECTED] (ELECTRONICS PROFESSIONALS LIST) Subject: Re: [Techs] Sony KV32XBR96S (repeated audio amp IC failure) Reply�to: [EMAIL PROTECTED] (ELECTRONICS PROFESSIONALS LIST) ================================= Update! Besides the audio amp IC (IC1401) being blown again and replacing it along with D1409, D1410, D1411, and C1407, I have found the following defective components in the power supply and replaced them: Q603 Q604 VDR602 R623 After replacing these and every electrolytic on the "G" (power supply) board, when plugging in the set the relay starts to chatter repeatedly and Q603 and Q604 get very hot immediately and shortly thereafter short again (even with connector G5 disconnected for audio amp B+). this time however, R623 remains normal. I can't seem to locate why and I am spending far too much time on this set and the customer is very anxious to get it back. I had previously replaced C662 and C668 but as I indicated, all electrolytics have been replaced (again for some of them). Anyone have some suggestions? Bob Waterman, CET� #RI-28 Master Technician License #9109 Service Manager / Parts Manager Gemini Computer, TV, & Security Alarms (508)695-7302 (508)695-7769 FAX [EMAIL PROTECTED] [EMAIL PROTECTED] www.geminicomputertvsecurityalarms.com ================================= From: "Gemini Computer & TV" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, June 28, 2004 8:24 AM Subject: [Techs] Sony KV32XBR96S (repeated audio amp IC failure) ================================= I have a customer (who is an electronics engineer) with a Sony KV32XBR96S who brought in his set (as he lives outside my in-home service area) back in January for a dead set condition. I had found the front audio amp IC (IC1401) blown with a hole in it. There were also other damaged components as well that were replaced with Sony originals. Here is a list of those parts: IC1401 IC1501 D1409 D1410 D1411 C661 C662 C668 VDR602 R623 Everything was fine until the beginning of June when the customer once again brought it in for a dead set condition again. This time I found and replaced the following components with Sony originals: IC1401 D1409 D1410 D1411 I completed the repair on Friday, 06/18/2004 and let the set run continuously around the clock until he picked it up on Thursday, 06/24/2004. I had informed the customer that IC1401 once again had a hole blown in it and had him check the external speaker wire connections to make sure that none had excessive length of exposed bare copper at either end when he returned home. The set ran great Thursday, Friday, and part of Saturday but then the customer states he lost audio for about 15 minutes, then lost the picture, smelled burning, and the set returned to it's same old dead set condition. I just got off the phone with him and explained that it sounds like that IC1401 may have blown again but I am at a loss to explain the reason for a repeated failure and that I would pose this question to my fellow technicians on the various email forums to which I am a member. So now let me request your collective ideas! Bob Waterman, CET� #RI-28 Master Technician License #9109 Service Manager / Parts Manager Gemini Computer, TV, & Security Alarms (508)695-7302 (508)695-7769 FAX [EMAIL PROTECTED] [EMAIL PROTECTED] www.geminicomputertvsecurityalarms.com ______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com ______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com Joes....Electronics �(Joe:Tech/2004) [EMAIL PROTECTED] Fax::509-479-2283 _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
