One is titled 'Servicing by Signal Tracing' and the other is 'Servicing by Signal Substitution'. Microsoft Office 2007 Blogspot. (although the first page of the PDF. Is Servicing by Signal. Precision Apparatus E- 2. Servicing by Signal Substitution Manual. For sale is reprint 1. Precision Apparatus servicing Servicing by Signal Substitution manual. Find great deals on eBay for servicing by signal substitution. Servicing Vintage Tube Radios by Signal Tracing, OTR, Rider, Guides PDF. Servicing by Signal.

One of the fun things about this hobby is picking up test equipment that you don't necessarily need. I picked up a Heathkit T-4, in working condition, though I will do a recap. I have it's manual, and a copy of an Eico 147 manual, and between the two manuals I have a good idea of how to use the T-4 I came across 'Servicing by Signal Tracing' by John Rider from a few sellers on eBay, ranging from 8 to 10 bucks for CD's.

Pretty short money, but at the same time why spend the money if the manuals that I have are enough. In fact, the operation text or some of it in the T-4 manual is an excerpt from the Rider book. Thoughts, is the book worth getting? Russ _________________ A place for everything, everything in it's place.

I just don't remember where all those places are. Depends on your trouble shooting style. I don't do signal tracing--- the only time I put in a signal is for alignment. Actually, not quite true. I always start at the back-- the audio output stage-- and work forward. Check for the right voltages and currents first, and then look for a response.