T&L Publications

I am trying to repair a Carver DPL-33 sound processor. It had bad output ics: stk4026-#2, [2] TDA2030A.The matrix works but the surround and dolby don't[weak and distorted and bad channel routing]. Is this a LA2770 dolby /surround Ic problem? I can't get the pinout or data sheet on this discontinued...

Depending on your application: if useing as a freq counter you can use nte4026b for each digit. They are cascadable. I built my prototype experiments like this 20 years ago: freq counter,counting timer, cap meter useing the cd4026ae old version and it worked ok but a six digit version took tremendou...

Can a ne570 be replaced with sa571n [rs# 900-7079
$3.25 from Radio Shack. This is also a 16 pin dip.
The Blab buster project is interesting. I think it can be used with electronic organs for an automatic level control. Maybe with MIDI devices too.

I have a Hitachi Tv at my job that has vertical stretching that makes the video image like a person thin at top of head only. I have replaced c604 330uf@50v with no luck. Also the bottom pulls up slightly after on about an hour. I can't seem to find the bad component.Any help would be appreciated fo...