Walter, I pulled & Ohmed R406 & R402 because I only have 2.3v on Collector of Q404, they both check good so something further along is pulling my supply down, only have 1.2v on Q410`s emitter, 1.8 on base and 2.3 on collector. No 5 v line= no relay click, I`ll keep looking, thank you for your time and expertise, Larry E. walter wood wrote: >Larry, the regulated power supply on these chassis >is very close. >The scan derived is different as is the micro. >The standby 5v is on the emitter of Q410 through a >6.8 ohm resistor R417. >It then branches into 3 more 5 volt sources. >L417 >L418 >and through R305 and L315. >Q410 base looks like it is fed from the raw 156 >volt b+ through F401,R406,R402,D415,D416 and R416. >The collector of Q410 should have aprox. 6.6vdc in >stand by.The emitter 5vdc and Base about 6. >IC 345 on the P6 is fed 5v on pins >17,13,18,36,40,16,48,34,33,32,30,31,and 44 through >the remote receiver. >Pin 17 also goes to the keyboard, and a stuck, or >windex'ed button would kill the 5v. >HTH >Walter >--- "Larry E." <videotech@xxxxxxxxxxxx> wrote: > >>Hi guys, got a 25P6 chassis totally dead, No >>relay click, nothing. I >>haven`t got the print for a >>P6, I`m using a Y1/Y4 because the power supply is >>close. I have standby >>B+ out of the regulator IC >> to collector of Q403 the 9volt standby switch >>but emitter is 2 volts >>instead of 6.8, if the P6 >>chassis works the same way as the Y1/Y4 this >>means I don`t have my 5 >>volt line for the micro. >>The micros are both marked IC345 but they are >>different, any ideas?? >> >>Larry Eastman >>American TV & Electronics >>Crystal River Fl. >> >>------------------------------------------ >>To REMOVE your email address, click here: >> http://www.tech-assist.org/unsubb.html >>To CHANGE your email address, click here: >> http://www.tech-assist.org/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!? >Yahoo! Health - Feel better, live better >http://health.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.tech-assist.org/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.tech-assist.org/change.html ------------------------------------------ ***NEW*** Tips Added Instantly!!!*** Submit Repair Tips here: http://www.tech-assist.org/secure/tip/