Just catching up. Boy I am glad you guys finely got that straitened out. A lot of good info came out of it and I saved some of it. My question is did the intermittent color problem get resolved? Jerry Alpha 21 Electronics Granite City, IL 62040 618-452-8620 alpha21century1234@xxxxxxxxxxxxx tjanphyl@xxxxxxxxxxxxxxx wrote:Understood now. In the case of many-layered boards, these internal layers only have connecting traces,not any components in between I assume.It is to allow for more wire density without more surface area boards. I see. If they needed 400 traces to wire a PCB, it is more compact to ,say, have 8 layers with 50 traces= the 400 needed instead of a board many times larger. Phil Phil Bader, Pres. Jan Phyl TV Inc Winter Haven, Fl (863) 299-8821 Confounding the wise since 1976 personal email: pbader@xxxxxxxxxxxxxxx ----- Original Message ----- From: becyn Date: Friday, November 25, 2005 7:32 pm Subject: [TechAssist] Re: Toshiba TP50F90 color intermittent > Well, then the question is which one of those very tiny holes > is > the culpret. > In the case of a simple old fashioned double-sided, you might be > able to > snake some > wire wrap gauge wire through the hole and solder both sides. That > might > be OK if there's just a few. > > However, on a multi- layer pcb there's no definitve way to "know" > you've > sufficiently flowed the > contacts to the inner layers. Besides the holes on these scan > converters > are about the diameter of a needle and they have a boat load of them. > > IMHO it's better to just replace the module than to aggravate > myself > with something that might or might not get fixed after all that > effort. > Sorry...NO CAR , just an opinion from "Dr. Jim" ! ;-) > > Jim McVey > McVey Alltronix > 327 Broadway > Newburgh N.Y. 12550 > > "If it doesn't play... > CALL MCVEY !!!!!!" > Factory authorized > service for over 20 > major brands. > 845 561 8383 > (Last of the Mohegans) > > > > > tjanphyl@xxxxxxxxxxxxxxx wrote: > > >OK. Now: since I am showing my ignorance here I might as well go > for > >the car, behind door #2! > >How exactly does a hole "go bad"? You mean poor solder flow thru > them? > >Reflow solder is the fix? > >Phil > > > >Phil Bader, Pres. > >Jan Phyl TV Inc > >Winter Haven, Fl > >(863) 299-8821 > >Confounding the wise since 1976 > >personal email: pbader@xxxxxxxxxxxxxxx > > > >----- Original Message ----- > >From: becyn > >Date: Friday, November 25, 2005 5:16 pm > >Subject: [TechAssist] Re: Toshiba TP50F90 color intermittent > > > > > > > >>You know, 'through holes" to make connections on multi-layered > and > >>double sided boards? > >>"Via" is the pcb industry "politically correct" term for the > things.>> > >>Jim McVey > >>McVey Alltronix > >>327 Broadway > >>Newburgh N.Y. 12550 > >> > >>"If it doesn't play... > >>CALL MCVEY !!!!!!" > >>Factory authorized > >>service for over 20 > >>major brands. > >>845 561 8383 > >>(Last of the Mohegans) > >> > >>tjanphyl@xxxxxxxxxxxxxxx wrote: > >> > >> > >> > >>>have bad via's ???? > >>>Phil > >>> > >>>Phil Bader, Pres. > >>>Jan Phyl TV Inc > >>>Winter Haven, Fl > >>>(863) 299-8821 > >>>Confounding the wise since 1976 > >>>personal email: pbader@xxxxxxxxxxxxxxx > >>> > >>>----- Original Message ----- > >>>From: becyn > >>>Date: Friday, November 25, 2005 1:46 pm > >>>Subject: [TechAssist] Re: Toshiba TP50F90 color intermittent > >>> > >>> > >>> > >>> > >>> > >>>>Yes, Toshiba's "hyper or scan converter pcb's have been > dropping > >>>>like > >>>>flies lately around here. > >>>>Some of them seem to have bad via's which are sensitive to > >>>>tapping, or > >>>>twisting the can slightly. > >>>> > >>>>Jim McVey > >>>>McVey Alltronix > >>>>327 Broadway > >>>>Newburgh N.Y. 12550 > >>>> > >>>>"If it doesn't play... > >>>>CALL MCVEY !!!!!!" > >>>>Factory authorized > >>>>service for over 20 > >>>>major brands. > >>>>845 561 8383 > >>>>(Last of the Mohegans) > >>>> > >>>>Carol Rundle wrote: > >>>> > >>>> > >>>> > >>>> > >>>> > >>>>>If your model has standup shielded module( hyper brd.) just > >>>>> > >>>>> > >>>>> > >>>>> > >>>>behind A/V jack panel, try a little freeze, and heat, > inside > >>>>module. if it simulates your symtoms, remove brd., ESR > lytics > >>>> > >>>> > >>, > >> > >> > >>>> I've repaired several Toshiba hyper brd's, found > >>>>weak,leaky smd lytics, usually find several (8-10)weak,leaky ! > > >>>>Causing symtom's similar to your 's.. hth > >>>> > >>>> > >>>> > >>>> > >>>>>Bill > >>>>>Bill'sTV > >>>>> Sonora,Calif. > >>>>> > >>>>> > >>>>>Ian Scott wrote:Hello, This set > is > >>>>> > >>>>> > >>in > >> > >> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>the customer's home and intermittently loses > >>>> > >>>> > >>>> > >>>> > >>>>>color. When there is no color, the black and white picture > has > >>>>> > >>>>> > >>a > >> > >> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>noise>in it that appears like you're looking through a screen > >>>>door. Both the > >>>> > >>>> > >>>> > >>>> > >>>>>main picture and PIP will lose color. When I remove the rear > >>>>> > >>>>> > >>>>> > >>>>> > >>>>cover to > >>>> > >>>> > >>>> > >>>> > >>>>>work on it, after 10 minutes or so the problem won't occur > >>>>> > >>>>> > >>>>> > >>>>> > >>>>anymore. I > >>>> > >>>> > >>>> > >>>> > >>>>>have tried to heat up the pc boards with a hair dryer, but > the > >>>>> > >>>>> > >>>>> > >>>>> > >>>>symptom>won't return (until I leave). I suspect the comb filter. > >>>> > >>>> > >>>> > >>>> > >>>>>The customer normally watches digital cable and he has had > the > >>>>> > >>>>> > >>>>> > >>>>> > >>>>cable box > >>>> > >>>> > >>>> > >>>> > >>>>>replaced. I have asked the customer to try using his DVD to > see > >>>>> > >>>>> > >>>>> > >>>>> > >>>>if it > >>>> > >>>> > >>>> > >>>> > >>>>>loses color as well, but so far the results are inconclusive. > >>>>>Thanks in advance for any help. > >>>>>Ian Scott > >>>>>Service Depot > >>>>>252 Lasalle Blvd. > >>>>>Sudbury, ON > >>>>>P3A 1W6 > >>>>>705-566-3557 > >>>>>Fax 705-566-3455 > >>>>> > >>>>> > >>>>>-------------------------------------------------------------- > -- > >>>>> > >>>>> > >>-- > >> > >> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>----------- > >>>> > >>>> > >>>> > >>>> > >>>>>This Email List is accessible to the general public through > >>>>> > >>>>> > >>>>> > >>>>> > >>>>search engines. 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 accessible to the general public through > >>>>> > >>>>> > >>>>> > >>>>> > >>>>search engines. 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/ > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>-- > >>>>No virus found in this outgoing message. > >>>>Checked by AVG Free Edition. > >>>>Version: 7.1.362 / Virus Database: 267.13.7/182 - Release > Date: > >>>>11/24/05 > >>>>--------------------------------------------------------------- > -- > >>>> > >>>> > >>-- > >> > >> > >>>>---------- > >>>>This Email List is accessible to the general public through > >>>> > >>>> > >>search > >> > >> > >>>>engines. Remove: http://www.tech-assist.org/remove.htm > >>>>Set 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 accessible to the general public through > >>> > >>> > >>search engines. 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/ > >>> > >>> > >>> > >>> > >>> > >>> > >>-- > >>No virus found in this outgoing message. > >>Checked by AVG Free Edition. > >>Version: 7.1.362 / Virus Database: 267.13.7/182 - Release Date: > >>11/24/05 > >>----------------------------------------------------------------- > -- > >>---------- > >>This Email List is accessible to the general public through > search > >>engines. Remove: http://www.tech-assist.org/remove.htm > >>Set 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 accessible to the general public through > search engines. 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/ > > > > > > > > > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.362 / Virus Database: 267.13.7/182 - Release Date: > 11/24/05 > ------------------------------------------------------------------- > ---------- > This Email List is accessible to the general public through search > engines. Remove: http://www.tech-assist.org/remove.htm > Set 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 accessible to the general public through search engines. 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 accessible to the general public through search engines. 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/