[1000mp] FP-29 Yaesu Switching Power Supply

[w8gf]

Rob:  Thanks for the suggestion.  That's what I was doing early-on 
until a replacement FP-29 was finally procured from Yaesu.  I was 
hoping to repair this guy to have as a spare.  I have a schematic and 
parts - list but no block diagram.  Too bad because I know from my PC 
computer power supply repair experience that switchers can be a 
nightmare because of multiple feedback circuitry.

73, Gerry (W8GF)



-----Original Message-----
From: Rob Atkinson <k5uj at sbcglobal.net>
To: All about Yaesu 1000mp <1000mp at mailman.qth.net>
Sent: Tue, 27 Nov 2007 9:48 am
Subject: Re: [1000mp] FP-29 Yaesu Switching Power Supply


Gerry, 
 
If all else fails, you can get separate p.s. from Astron for the two 
voltages. Of course you have to figure out how to wire them to the d.c. 
jack on the rig and you will have two p.s. to deal with but at least 
the rig will be back on with 200 w. 
 
73 
 
rob / k5uj 
 
On Monday, November 26, 2007, at 02:07 PM, Alan P wrote: 
 
> Gerry, unplug the power amplifier module and retry. Al VA1MM 
> 
> -----Original Message----- 
> From: 1000mp-bounces at mailman.qth.net 
> [mailto:1000mp-bounces at mailman.qth.net]On Behalf Of w8gf 
> Sent: Monday, November 26, 2007 2:15 PM 
> To: 1000mp at mailman.qth.net 
> Subject: [1000mp] FP-29 Yaesu Switching Power Supply 
> 
> 
> Looking for troubleshooting ideas for the Yaesu FT1000MP MkV, FP-29 
> power supply. After applying AC power both the 30 and 13.8 voltages 
> try to come up but fall back to zero within a very short pderiod of 
> time. Hope it's not the $100.00 LSI chip! 
> 
> Gerry, W8GF 
 
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