Sounds to me as if the transfer/isolation cap between plate and tank circuit
is suspect!
Vy 73 de OZ1PIF, Peter
********** OZ1PIF **************
email: oz1pif(no-spam-filler)@get2net.dk
http://hjem.get2net.dk/oz1pif
Ph. +45 4619 3239
Snailmail:
Peter Frenning
Ternevej 23
DK-4130 Viby Sj.
Denmark
***********************************
----- Original Message -----
From: "Osten B Magnusson" <sm5dqc@algonet.se>
To: <amps@contesting.com>
Sent: Tuesday, April 08, 2003 10:21 AM
Subject: [Amps] Need help Yaesu FL2100Z
>
> Dear friends!
>
> My old FL2100z just does not work... I get nothing out, tubes
> are OK when checked in another amp. The only thing that
> happens is that I now have around 50 mA Ip even with the
> switch in stand-by position. The R5, 820 ohm resistor for
> bias is burned and shows 670 ohms, should be 820 ohms.
> I did replace it, but no change. The input from the transformer
> to the PB-1903 circuit board is correct, but only around 6 volts
> bias out from that circuit board.
>
> Any hints what to look for. Please answer direct to
>
> sm5dqc@algonet.se
>
> and when I cured the problem I will let you all know. Many thanks
> in advance!
>
> 73 de Osten SM5DQC
>
>
>
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