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Also checked these voltages and all were good

Hi All, Fantastic thread, have been following every exchange, looking forward to the result. Have a non Modded FT847 good luck guys ‘73 Paul

Your choice....QRM is optional. <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>

I see no reason why it should be off line. A worthwhile exercise in fault finding, <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>

That's great Max, I hope it reaches a resolution.

Not a problem Ian. I thought others would benefit from the exercise. Sorry to have bothered the group. I'll continue the repair through private messaging. If any other members might be interested in

This is a bit like a "death by a thousand cuts". Any chance you could go off-line?

In that case Q3007 is fine, you need to trace back and find your signal from the RF board, it will be an UHF osc out of luck! Is my guess or a LO to mix up to UHF let me study further 73 Andrew Sent:

On Q3011 (VHF) I get 313mV on pin 1, 1.4V on pin 5 On Q3007 (UHF) nothing on either pin 1 or 5

Phew, have you checked the I/P pin 1, and compared it with Pin 1 on the VHF side, I am guessing they should be similar! 73 Andrew Sent: 19 July 2022 11:48 To: [email protected] Subject: Re:

Hi Andy, Sorry meant Q3011.

Hi do you mean: Q3007? What is pin 1 of the UPC1677Cs’ I have not found Q3006! 73 Andrew Sent: 19 July 2022 11:04 To: [email protected] Subject: Re: [YaesuFT847] Schematics? Based on the

Based on the comparison reasons against its VHF counterpart, I still think Q3007 is bad. I have a couple on the way but won't be here for a week or so.

That is good news Get Outlook for Android

Q3007 temporarily hits about 1.1V out on pin 5 but then drops down to the 20mV range

Andy, TP3009 is 5V on RX goes low <0.5V on TX UHF TP3010 does the same on VHF Q3007 pin 8 (KEY)? 0V on RX 4.05V on TX

Ok some don't, check the input first, you really do need a small spectrum analyser, some SMA flying leads and some SMA attenuators and perhaps a USB power meter? But I will help you all I can from a

According to the NEC datasheet, the pinout matches the schematic.

You have to check it is the right pin out pin 7 and 8 are interchange on the NEC version Get Outlook for Android

I've got a couple on order now just in case it turns out to be the issue. Sure would have been nice if they were socketed. I'll check those other two test points tonight and report back. Thank you