Joe, Sometimes those type of IC's have a case to lead fracture. Really common on the older audio IC packs (STK's). I found about the only easy way to find them was with freeze- or- remove the IC from the heatsink and gently wiggle the IC while the set was on. Have to be real quick as they overheat really fast. Frank ----- Original Message ----- From: "Joe Tech2004" <[EMAIL PROTECTED]> To: "Email list for ELECTRONICS PROFESSIONALS only" <[EMAIL PROTECTED]> Sent: Friday, September 24, 2004 9:42 PM Subject: Re: [Techs] Panasonic Mod-CT27S18S, very intermittent connectionof..??
Fix- Go figure it was vert IC (LA7836) --- Joe Tech2004 <[EMAIL PROTECTED]> wrote: Panasonic Model: CT27S18S Symptoms: with chassis removed, very intermittent as far as being very touchy, sometimes you can beat the heck out of it and nothing as far as acting up. Then theres times you can breath on it or touch it anywhere and it just goes screwy, and then do the same to correct it. Cannot isolate bad connection. This unit is one of those that every time you think its fixed, put the back on, and there it goes acting up again. Its definitely a bad connection of sorts, PC or internal part, which I believe it to be, such as a bad cap leg. I had this unit in shop about 2 weeks ago. After numerous attempts at soldering literally everything except the cure, i gave it the torch routine on bottom side of total pc board. Tested unit for several days and it seemed OK. WRONG.... Cust called today and is bringing in 2-morrow.... apparently lasted a few days then intermittently started acting up again enough to call back. All i need to know is, has anybody had similar problem with this unit. Cust already knows problem and is very cooperative. So, again i guess i'm just going to have one of those sets that will be on bench for quite awhile as i just play with it... TIA for anything... "joe" 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 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.769 / Virus Database: 516 - Release Date: 9/24/04 _______________________________________________ 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
