[LCC] LCC Digest, Vol 129, Issue 1200 sag

[Marcel Livesay]

What is your 240 input change from summer to winter?
I’ve seen bigger sags in primary voltage during hot summer months. 
Marcel N5VU
Sent from my iPhone

> On Aug 21, 2019, at 12:00, lcc-request at louisianacontestclub.org wrote:
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> Today's Topics:
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>   1. Ameritron AL-1200 - power supply repair/upgrade (w5wz at w5wz.com)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Wed, 21 Aug 2019 07:09:13 -0500
> From: w5wz at w5wz.com
> To: LCC <lcc at louisianacontestclub.org>
> Subject: [LCC] Ameritron AL-1200 - power supply repair/upgrade
> Message-ID: <615d9c7db4d544caa716e126875de236 at w5wz.com>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
> 
> My AL-1200 is not putting out the power it used to.  I've noticed that 
> HV at idle has sagged to 3,150-3,200 volts, and at key down drops to 
> 2,850-2,900 volts.  About 5 years ago, I replaced the HV filter caps and 
> bleeder resistors.
> 
> The factory design uses 8 caps, 270mF @ 450v, 85C (8x450=3,600)  I've 
> found an upgrade board that will use 10 caps (10x450=4,500).
> 
> https://www.ebay.com/itm/W7RY-Ameritron-Amplifier-Replacement-Capacitor-Board-10-Capacitors-4500-Volts/283294210547
> 
> 
> Regarding the 10 cap board:
> 
> 1.  Do you think that would be a good upgrade?
> 2.  Would this have a detrimental effect on tube life?
> 3.  Or would you recap again with factory components?
> 
> --Scott
> 
> 
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> End of LCC Digest, Vol 129, Issue 3
> ***********************************