[AMRadio] Thank You! --WAS:Matchbox Melts Down IC-735 ??

Merz Donald S merz.ds at mellon.com
Thu Jun 23 14:16:53 EDT 2005

Thanks to the 22 folks who were kind enough to take the time to reply. The consensus of the replies is that I may choose to offer the buyer his money back if he returns the matchbox. But I could also choose not to do so, at the peril of my eBay feedback rating.

Comments about the user's use of the Matchbox are summarized as:

1. It's a balanced tuner. Running it with an unbalanced output from a transceiver could be unpredictable.
2. It has a T/R relay that defaults to R. Was the T/R relay properly energized?
3. Icom's literature says that the IC-735 does have thermal overload protection against high SWR. Why didn't it work?
4. The meltdown could have occurred due to a violent mismatch into which the operator let the TX transmit too long.

So I guess I still have a decision to make. I am not sure what I will do yet.
But thanks all for your help and moral support. It's the first time anything like this has happened to me...

73, Don Merz, N3RHT

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net]On Behalf Of Merz Donald S
Sent: Thursday, June 23, 2005 11:07 AM
To: 'Amradio (E-mail); 'Glowbugs (E-mail)
Subject: [AMRadio] Matchbox Melts Down IC-735 ??

I need the benefit of your expertise. You may recall that I advertised a 275W EFJ matchbox on this list a month ago. Well, it didn't sell and it went on eBay where it did sell. The buyer hooked it up to his IC-735 without looking inside the matchbox (I had never done so either) and tried to transmit. He says that the IC-735 final blew as a result. He says that he then looked inside the matchbox and found a short that he thinks caused the melt down.

I was thinking that this doesn't add up too well. But I have no experience with that ricebox. So I am also thinking that I should offer to help pay for the cleanup if I am at fault here. And that's the question: Am I at fault here?

Any input appreciated. 

73, Don Merz, N3RHT
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