[Amps] Fw: [ICOM] PW1 REVISION

[PA3DUV]

----- Original Message ----- 
From: "Massimo 'Max' MUCCI - I8NHJ" <i8nhj at pagus.it>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Tuesday, March 29, 2005 9:03 AM
Subject: [ICOM] PW1 REVISION


> Just to let you know that, after a lot of failure at least
> here in Europe, ICOM Japan released a technical note about the
> PW1. Some equipment suffered of mosfet's burning and the
> engineers assert it depends from a RF feedback in the LPF
> board. In some circumstances the RF can produce a false
> reading by the logic circuit that switch some relays on or
> off in the wrong way. This produce high SWR on the PA module
> and the consequent burning.
> The modification consist in soldering some capacitors on the
> LPF board.
> Unfortunately I've just seen the message from ICOM Japan but
> I wasn't able to pick up a copy or take in-deep note.
> 
> ----------------------
> 
> 73 de Max, I8NHJ/NH7CU
> one of EL2PP, 1A0KM, JT1Y, E30GA, T77V, TT8MM, T32R, K5K, XR0X, S05X
> 
> 
> 
> ----
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