[1000mp] Failed FP-29 Power Supply

[Ed Gosch]

I repaired a number of FP-29 supplies over the past few years.  Some 
failures will result in Yaesu recommending the purchase of a new
supply as a cheaper way out.  One of the most expensive parts is the custom 
HIC1 hybrid mosfet driver/controller.  Its over $100.00 alone.
I believe the power mosfets are $40 each or more.  Due to the labor charge, 
it doesn't take long for the repair to exceed the $400 plus, cost of a 
replacement FP-29.  I haven't had to spend more than $300 in parts for the 
worst case failure.  The good news for you is that the symptoms you describe 
proves that the expensive components are all good.  Your problem lies in the 
protection circuitry which is made up of very cheap zeners, transistors, 
comparator, etc.
Good Luck
Ed
W2UV


----- Original Message ----- 
From: "Jim Hill" <jhill at vom.com>
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
Sent: Thursday, November 30, 2006 8:21 PM
Subject: Re: [1000mp] Failed FP-29 Power Supply


>I had big problems with my FP-29 also.
> I would call Yaesu and describe the problem.  They can trouble shoot the 
> power supply without the radio.
> Having no problems now.
> 73, Jim, K6uuw
>
> On Nov 30, 2006, at 10:55 AM, Richard Thorne wrote:
>
>> I believe I have a bad FP-29 power supply.  I was using my Mark V 200 
>> watt rig last night, heard a pop that sounded like it came from the 
>> supply and the rig went off.
>>
>> When I turn the supply on and off the LED comes on bright but quickly 
>> dims, and the rig will not turn on.
>>
>> I put my volt meter across the output of the supply I get zip.
>>
>> When this happened my rig was connected to the antenna, the wind was 
>> howling as well as snowing.  Is there any chance I took a hit via the 
>> antenna that some how took out the supply?
>>
>> My question is should I send the rig in along with the supply or just the 
>> supply?  It sure would save on shipping if I did not have to send the rig 
>> in.
>>
>> Rich - N5ZC
>>
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