[Boatanchors] Yaesu FTDX 560
ladewilde at outlook.com
Sun Jun 19 14:20:46 EDT 2016
Mike, There is no hum in the receiver at all. It's very clear. Was the first thing I considered.
From: Mike Lichtman <mlicht103 at aol.com>
Sent: Sunday, June 19, 2016 2:17 PM
To: Lacera DeWilde
Subject: Re: [Boatanchors] Yaesu FTDX 560
First thing to be concerned about is the filter caps. Is there any hum in the receiver with the no antenna and the volume up? If so you might want to replace the filter caps as they can cause problems if they short. 73 Mike KF6KXG
On Jun 19, 2016, at 11:14 AM, Lacera DeWilde wrote:
> I haven't started on checking anything yet, Mark. I did check the finals to make sure they were ok and I have an extra set I can use later if needed. One issue I see is when the VOX switch in place in the PTT/STNDBY position, the transmit relay energizes. I will let the group know what I find in the days ahead. Any suggestions would be appreciated. The radio has gotten hi reviews so I an glad to have it and look forward to restoring it.
> From: mark depaepe <n5yey at live.com>
> Sent: Sunday, June 19, 2016 1:53:43 PM
> To: Lacera DeWilde
> Subject: Re: [Boatanchors] Yaesu FTDX 560
> On some of the older Yaesu radios there was an octal socket that required a plug with a jumper to be plugged in, I cannot remember if that was I order for the radio to operate in general or to transmit. I think it was to operate in general but a look at the schematic would tell. It could be a weak tube, either an oscillator or driver/final tube. Is the high voltage present on the final tubes? Is there current draw on the final tubes when the transmitter is activated?
> Sent from my iPhone
>> On Jun 19, 2016, at 12:07 PM, Lacera DeWilde <ladewilde at outlook.com> wrote:
>> I purchased a Yaesu FTDX 560 that receives well but does not transmit. Anyone in the group have experience with repairing this rig and where I might start in fixing the problem?
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