Thanks Jim. I have the panasonic schematic for the CT-27G5B that you quoted. This manual May be similar electronically, but does not look similar. The tuner is completely different, and the two big chips are missing from the top of the chassis. There are two SMD chips on the bottom. The eeprom set up is also like the Toshiba sets, but I don't know where the 5 volts to feed the pull up resistors comes from. I know that it could be pulled down by about anything. I had a rca that the glue under some smd caps had gone conductive causing loss of data voltage. At least, now I know that the 5vdc is supposed to be on pins 5&6, like I suspected. The being intermittent part still bothers me though. Thanks again. Walter --- Jim Myers <jr.myers@xxxxxxxxxxx> wrote: > > Walter, looking at CT27G5B schematic pins 5 and 6 > of the eeprom both have a > 4.7K pullup resistor connected to the 5v source. > Looks like they should sit > at 5 volts and have negative going data and clock > pulses when buttons are > pressed just like the RCA sets, probably the same > eeprom. Pins 1,2,3,4 and 7 > are grounded. Your data and/or clock lines are > probably being pulled low by > something on the I2C bus. > Jim Myers > Since 1972 > Telrad Electronic Services Co. > Fort Wayne, IN 46815 > jr.myers@xxxxxxxxxxx > 260-432-4486 Fax and Voice > Fax is always on > ----- Original Message ----- > From: "walter wood" <wwood_38478@xxxxxxxxx> > To: "Tech Assist" <techassist@xxxxxxxxxxxxx> > Sent: Monday, September 30, 2002 11:00 AM > Subject: [TechAssist] Panasonic CT27G6E AP362/ > Dead, No voltage on scan and > data lines. > > > > Let me try this again. I don't seem to get much > responses on questions ask late on Fridays. > > > The 5vcc on pin 8 of the eeprom is there but > > there > > is no voltage on pins 5 and 6, the scan and > data > > lines. > > Shouldn't there be about 4.7vdc there?? > > I'm open for suggestions, as I have resoldered > > the > > relay, and everything else that looked the > least > > bit flakey. > > Set was intermittent, but I haven't got it to > > come > > on at all lately. > > Thanks > > Walter > > > > ===== > Walter Wood > Future Tech Home Center > 2786 Hwy. 43 N. > Lawrenceburg Tn. 38464 > 931-829-3337 > Fax 931-829-4044 > mailto:wwood_38478@xxxxxxxxx > > __________________________________________________ > Do you Yahoo!? > New DSL Internet Access from SBC & Yahoo! > http://sbc.yahoo.com > ------------------------------------------ > 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 > ------------------------------------------ > ***NEW*** Tips Added Instantly!!!*** > Submit Repair Tips here: > http://www.tech-assist.org/secure/tip/ > > ------------------------------------------ > 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 > ------------------------------------------ > ***NEW*** Tips Added Instantly!!!*** > Submit Repair Tips here: > http://www.tech-assist.org/secure/tip/ ===== Walter Wood Future Tech Home Center 2786 Hwy. 43 N. Lawrenceburg Tn. 38464 931-829-3337 Fax 931-829-4044 mailto:wwood_38478@xxxxxxxxx __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com ------------------------------------------ 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 ------------------------------------------ ***NEW*** Tips Added Instantly!!!*** Submit Repair Tips here: http://www.tech-assist.org/secure/tip/