Thanks to all that responded for the help. The cure was IC301 jungle chip, LA7601W. Thanks, Daryl Daryl's TV 3310 Dyer St. El Paso, TX 79930 915-565-9184 915-564-1024 Fax http://dynacomp.freeyellow.com -----Original Message----- From: D Thunhurst <dthunhurst@xxxxxxx> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx> Date: Monday, December 09, 2002 10:41 AM Subject: [TechAssist] Re: LXI M#564.54710751 (Toshiba) mfg. 3/88, video driver prob. > >I stand corrected. >That's what happens when you ASS_U_ME instead of confirming. The set has a >Toshiba labeled crt and tuner along with several IC's. Also the customer >told me it was a 35" but I think it is actually a 32" set. >I have taken the advice of several and soldered the connectors to the crt >board even if they looked alright but no help. >I have made a bit of progress on this. I can get a picture with the rgb >driver collectors running at 146 volts by adjusting what appears to be a >brightness range control. However, with scene changes it flares out of >brightness stability. I am leaning towards the ABL circuit. There also is >no changes in the picture when I vary the brightness or contrast but OSD >indicates changes. It appears that possibly it is all controlled by the >jungle chip. >Without the literature, I am guessing. I would replace the chip but no one >locally has it and of course the customer is expecting to have his set back >today. >Thanks, >Daryl >Daryl's TV >3310 Dyer St. >El Paso, TX 79930 >915-565-9184 >915-564-1024 Fax >http://dynacomp.freeyellow.com >-----Original Message----- >From: gulftech@xxxxxxxx <gulftech@xxxxxxxx> >To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx> >Date: Monday, December 09, 2002 9:00 AM >Subject: [TechAssist] Re: LXI M#564.54710751 (Toshiba) mfg. 3/88, video >driver prob. > > >> >>Daryl, >> >>564 is Sanyo/Fisher, not Toshiba. Resolder the wires from/to the crt >>pcb. May look good, but resolder them anyway. >> >> >>Ken Smith >>Gulf Technical Services >>3034 Gulf Breeze Parkway >>Gulf Breeze, FL 32563 >>850-934-8324 (Voice) 850-932-0819 (Fax) >> >> >>On Mon, 9 Dec 2002 07:36:04 -0700 "D Thunhurst" <dthunhurst@xxxxxxx> >>writes: >>> >>> Hi, >>> I have an old sears 35", 564.54710751 made by Toshiba. >>> No chassis number found and I have not been able to cross to any >>> Toshiba >>> numbers. Sams is available only by photocopy. >>> Set came in with intermittent vert. deflection. Found the usual bad >>> solder >>> joints throughout the chassis. Esr'd the electros and didn't find >>> anything >>> else bad. Traced my footsteps for possible solder bridges, >>> connectors in >>> the wrong place, etc. (none found). >>> Problem now is I have full deflection but have washed out video. The >>> picture looks like the usual symptom you get on the Zeniths that >>> have the >>> transistor shorted on the crt board. >>> I'm not sure if it is a ABL problem or a video driver problem. I >>> have 36 >>> volts on the RGB collectors but can bias the transistors to turn off >>> and >>> give me my 200 volts. However, when I turn up G2, I get a pulsing >>> on the >>> screen and momentarily get good video while it is pulsing ( pulses >>> at rate >>> of about one second). The RGB collectors then pulse from 36 to 145 >>> volts. >>> If anyone has any ideas or has a cure or possibly run a scan of the >>> video >>> driver and ABL circuits. >>> Thanks, >>> Daryl >>> Daryl's TV >>> 3310 Dyer St. >>> El Paso, TX 79930 >>> 915-565-9184 >>> 915-564-1024 Fax >>> http://dynacomp.freeyellow.com >>> >>> ------------------------------------------ >>> Submit A Repair Tip For Everyone Here: >>> http://www.tech-assist.org/secure/tip/main.html >>> ------------------------------------------ >>> To REMOVE your email address, click here: >>> http://www.tech-assist.org/unsubb.html >>> To CHANGE your email address, click here: >>> http://www.techassist.net/forms/change.html >>> >>> >> >> >>________________________________________________________________ >>Sign Up for Juno Platinum Internet Access Today >>Only $9.95 per month! >>Visit www.juno.com >>------------------------------------------ >>Submit A Repair Tip For Everyone Here: >>http://www.tech-assist.org/secure/tip/main.html >>------------------------------------------ >>To REMOVE your email address, click here: >> http://www.tech-assist.org/unsubb.html >>To CHANGE your email address, click here: >> http://www.techassist.net/forms/change.html >> >> > >------------------------------------------ >Submit A Repair Tip For Everyone Here: >http://www.tech-assist.org/secure/tip/main.html >------------------------------------------ >To REMOVE your email address, click here: > http://www.tech-assist.org/unsubb.html >To CHANGE your email address, click here: > http://www.techassist.net/forms/change.html > > ------------------------------------------ Submit A Repair Tip For Everyone Here: http://www.tech-assist.org/secure/tip/main.html ------------------------------------------ To REMOVE your email address, click here: http://www.tech-assist.org/unsubb.html To CHANGE your email address, click here: http://www.techassist.net/forms/change.html