--- In ham_amplifiers@..., R L Measures <r@...> wrote:
On Dec 27, 2006, at 5:32 PM, Mike(W5UC) & Kathy(K5MWH) wrote:
I'm not familiar with this amp, but a good guess is that I
would look for a shorted diode or diodes in the power supply.
RICH SEZ....If a HV rectifier diode shorts, and the electrolytics
are not protected from AC by reverse diodes, the electrolytics are
DOA.
### agreed. Which is why I always install at least one reverse
connected 6A10 [1 kv-6A CCS-400A surge] diode across each HV
electrolytic. Now Ameritron isn't the only ones who leave out the
RVS connected diode across each lytic...they all do. I don't see
any RVS connected diodes across caps in alpha's, qro, Command
technology, heath, dentron, amp supply, or anybody else. They are
all on the..... "get cheap program".
### I'm tellin u fellows.... if these manufacturer's of ham gear
can eliminate just one diode, screw, washer, or anything else, they
will do it in a heart beat.... to enhance profits.
### Rauch keeps bragging about how Ameritron pays very little for
parts in bulk. Have u any idea what a diode cost... when ur buying
100,000 to 500,000+ of em at one shot ?
### So here's yet another potential case of 8x expensive lytics
down the toilet.. cuz some bonehead conveniently forgot to install
16 cents worth of diodes at the factory. Can u imagine smoking
20-30 x 2000-5200 uf lytics in a real HV supply ?
### At least they should offer two versions of any amp.... the 2nd
one costing $5.00 more.... that's designed and built right.
Later... Jim VE7RF
...
R. L. Measures, AG6K, 805.386.3734
r@..., rlm@..., www.somis.org
