Frozen buttons-Resolved, now no trace

Anything about this unique oscilloscope DIY kit
Post Reply
Ernesto1235813
Posts: 1
Joined: Wed Nov 08, 2017 9:51 pm

Frozen buttons-Resolved, now no trace

Post by Ernesto1235813 »

Upon completion scope worked except the buttons( all) froze intermittently. Jumped PF6 to ground.restarted as described in other posts. This has stopped the frozen buttons but there is now no trace with probe or with the test jumper installed. Power tests show all voltages correct except VB shows 0 v instead of 0.6 and VT shows 2.2 v instead of 2.6. According to instructions this seems to indicate U3 is damaged. Where do I go from here.
Post Reply