recap of Tempest

G'day folks,

Well, I bought some Zanen kits about two years ago, and after digging
them (and reading the instructions) I had a question or two. After
reading about it enough times hear and in RGVAC, I figured out rather
quickly that R104 and R105 on the deflection board schematics were
really ZD's. What I couldn't find on my HV board was R913 in the
schematics?

OK, and I had a question about the parts that Zanen was supplying. I'm
not very good at identifying parts, but the differing sizes of the
resistors (for 1/4 watt, 1/2 watt and 2 watt) was a dead give away as to
which resistor was which. What I couldn't read or figure out was the
ZD's. The largest ZD was readable (and meant for ZD902. The next two
largest ZD were taped together, so they were probably 1N4750 27V and
meant for ZD100 and ZD101? This doesn't seem right since the original
ZD100 part had a big black ZD and I'm replacing it with a smaller orange
one??

The other ZD that was of similar size was probably 1N4743 and meant for
ZD901, right? Finally the smallest two diodes (not ZD's?) were taped
together and probably 1N4148 and were meant for D104 and D105?

Also, should I replace the POT in the HV? Does this control HV? If so,
I have no way of measuring it so I probably should leave it alone.

Thanks for any help in confirming my suspicions....as you can see, I'm a
bit of a scaried cat in making tech changs without having everything
double checked and confirmed by someone else. Thanks in advance!

                Steven S Ozdemir
                sso@dsc.com

ps - Hey, David Fish, I dug my HP5004A out last night, and it looks
complete. So if it powers up (and I can figure a way around the
oscilliscope), I think I'll try my hand at repairing some broken
Cinematronics mother boards with your EXCELLENT user manual and the
repaired Cinematronics Exercisor! If things go real well, then I'll
start in on repairing Kurt Mahan's, too!
Received on Fri Nov 14 08:54:25 1997