[TenTec] Corsair I gone bad!

[k7mks at comcast.net]

Bob If one 458 blew do I have to replace both of them. I have a final assy out a parts rig and it might be easier to replace the whole assy if the transstosr check OK w a Simpson of Triplett VOM 

Joe 
----- Original Message -----

From: "Bwana Bob" <wb2vuf at verizon.net> 
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com> 
Sent: Thursday, November 3, 2016 6:18:21 PM 
Subject: Re: [TenTec] Corsair I gone bad! 

Joe: 


Don't despair (yet). You will have to open up the final compartment to 
see what smoked. Maybe one of the final transistors is blown, or maybe 
a capacitor shorted out. 

The MRF458 transistors are available from RF Parts: 
https://www.rfparts.com/catalogsearch/result/?q=MRF458 

73, 

Bob WB2VUF 

On 11/3/2016 11:06 AM, Barry N1EU wrote: 
> dumb question, but where on a Corsair is there a hole big enough for a 
> mouse to get into? 
> 
> never mind, forget I asked . . . 
> 
> 73, Barry N1EU 
> 
> On Thu, Nov 3, 2016 at 10:43 AM, James Boswell <jboswell at nrao.edu> wrote: 
> 
>> On 11/2/2016 12:14 PM, k7mks at comcast.net wrote: 
>> 
>>> During testing thru a Bird 43 into a dRAKE 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> During testing thru a Bird 43 to a Drake KW dummy load my Corsair decided 
>>> to quit with a bang like a firecracker and a puff of smoke exiting from the 
>>> 3/8" hole in the top of the final assembly. The power supply breaker tripped 
>>> 
>>> After I recovered from this sudden turn of events I discovered that I 
>>> still had a working transmitte but could only get about 30-45 watts output 
>>> before the PS breaker tripped at about 14A or so. 
>>> 
>>> I strongly suspect my Corsair went from a nicely working radio to a 
>>> "parts unit" in an instant but decided to touch base with those that are 
>>> more comfortable with the events I've described. What likely went astray in 
>>> the RF final? 
>>> 
>>> 73 Joe K7MKS 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> KW 
>>> _______________________________________________ 
>>> TenTec mailing list 
>>> TenTec at contesting.com 
>>> http://lists.contesting.com/mailman/listinfo/tentec 
>>> 
>>> Hello, 
>> I had a mouse build a nest in my Corsair, she ate much of the 
>> wiring harness. I would make you a deal on that radio. 
>> 
>> Interested? 
>> 
>> 73'S KA5SIW 
>> 
>> _______________________________________________ 
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>> 
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