Indeed, I get 112mV as well at the junction of R117 & R118. ?So something is shorted to ground here. R118 perhaps?
Sent from Mike's iPad
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On 9 Feb 2025, at 15:10, reeferjon via groups.io <reeferjon@...> wrote:
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[Edited Message Follows]
Thank you Mike.
I do have the afore mentioned pages and they are great IF the set is working :-)
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I did some more investigation around Q106, all of the supplies measure correct.
No o/p on pin3 which is TP107
No i/p on Pin11
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TP101 confirms as 58Mhz
Then we come to a PD made up of R117 and R118, I'm not getting anything 'measurable' after R117, what level would that lightly be.
I calc that if i/p is 350mV then o/p should be around 112mV.
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I know the tracks are a bit fragile on these so will await a response before unsoldering on end and checking the values of R117 and R118.
<Screenshot 2025-02-09 143051.jpg>
