>> >>> Yes, Richardson is the distributor for Triton, Amperex, and Eimac.
>I purchased two Amperex 3500-Zs from QRO Technologies to replace some
>Chinese 3500Zs in my HF-2000 amp. One of the Chinese tubes went bad
>after about 4 years.
>Just under a year, one of the Amperex tubes went bad. It would draw grid
>current intermittently with no drive. I swapped tubes in the sockets and
>see it was isolated to one of the tubes. I put the Chinese spare in and the
>amp runs fine.
>QRO purchased the Amperex tubes from Richardson. I delivered the
>defective tube to Richardson on Jan 17. It has now been almost 15 weeks
>and they have not declared the tube defective and replaced it. They say they
>are waiting for their vendor to test the tube. I have contacted Richardson
>about 10 times asking what is the status. It is always the same -- we sent a
>message to Amperex and have no word.
? Ask that your tube be returned to you and I will test it at no charge.
>Richardson is willing to send a new tube only if they can bill someone if
>tube is declared good by Amperex.
? Why would Richardson replace a good tube?
>I have no problem with someone testing the tube. I am certain it was bad. So
>far Richardson reps have been pleasant, but brought nothing to a conclusion.
>I am open to suggestions about how to get them to send me a replacement.
? Paul - Did either one of the "bad" tubes exhibit a grid-filament
short when hot.?
The only way to discover such a problem is with a high-pot. breakdown
- Rich..., 805.386.3734, www.vcnet.com/measures.
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