Electronic equipment repair and service manual search discussion :: Topic review

frank · Posted: Wed Nov 22, 2006 12:41 am Post subject:

Solder Link lead throughs on signal processor sub board ZK14,16,19

Frank · Posted: Wed Nov 22, 2006 12:24 am Post subject:

Unit will not turn on. Measuring the B+ on the CPU found it to be only 4 volts on ICA01(54). Checking the B+ on at the output of the 5 volt regulator found the same low voltage on the output as on the input. Tech replace capacitor C814(1000mfd@ 25 volts) This restored normal voltages to the CPU but it still did not turn on. Further checking the CPU "Must Haves" it was discovered the reset was low instead of 5 volts. Capacitor CA72(2200mfd @ 6.3vdc w

goblins · Posted: Tue Nov 21, 2006 9:21 pm Post subject:

Probably this help you

http://www.download.nitd.co.uk/page.php?43

allanm · Posted: Mon Nov 20, 2006 3:56 pm Post subject: repair hitachi C32WD2TN2

Hitachi tv with no pic or sound. HT is present at 150v. Set appears to try to come on for 2 secs without much variation in the ht voltage. I've checked the usual dry jointed regulator and other components on the same heatsink. I've also disconnected the frame chip and again there's not much change in the voltage - about 28v. I know these sets don't tend to come on when the frame chip is disconnected.