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Great work Chris.
<div>Perhaps there's a repository of FT-100 info that will preserve the troubleshooting steps you took.
I'm disappointed to hear another story of Hams screwing other Hams. It happens all too often.
Good luck with the remaining repairs.
Joe, K8MP
Sent from AOL Mobile Mail
-----Original Message-----
From: [email protected] [FT100] <[email protected]>
To: FT100 <[email protected]>
Sent: Sat, Mar 17, 2018 01:16 AM
Subject: [FT100] FT-100 Will Not Turn On – check CV
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<p></p><p style="margin-bottom:0cm;">eBay purchase arrived today. Seller
said head clips broken & didn't respond to my questions – but
price was ok to went ahead. Soon had the head attached, wouldn’t
turn on, no clicking. Opened it up – fixed broken speaker wire &
checked all FPC connectors. Still wouldn’t power up. Circuit, shows
DC enters PA board, through filter T3004 then off to switching relay
RL3001 to PA stages & such. A quick bypass of the relay and still
nothing. Checked again & see DC passes through D3006 and comes
out on J3004 as signal CV. Then goes to main unit J1007 and comes out
on J1008. Then in to control unit J7005 pin 4 & to a 5V regulator
powering CPU. As a quick test I soldered a wire from pin 4 to the top
of PA board DC filter T3004 – bypassing all those FPC connectors.
Plugged it in and immediately heard life. Now turns on fine but has a
flashing display – suspect PLL unlock which I'll look at later.
</p><p style="margin-bottom:0cm;">
</p><p style="margin-bottom:0cm;">So if your rig is not powering up,
check Control Unit J7005 pin 4 is getting 13.8V when you connect
power. Hope this helps someone – when I searched here I found
nothing.</p><p style="margin-bottom:0cm;">
</p><p style="margin-bottom:0cm;">73s</p><p><span>
</span></p><p style="margin-bottom:0cm;">Chris Day
ZL1CVD</p><p><span><br class="aolmail_yui-cursor"></span></p><p></p>
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