开云体育

Tek 2335

k6whp All Messages By This Member #16516 Sorry for the undisciplined pleas for help but does anyone have any thoughts on a Tek 2335 that powers on and juts displays a spot and no sweep? Just need a suggestion or two to know where to start debugging as I am not familiar with this scope. When the unit sits for a while, it comes to life and seems OK but then loses the sweep. Thanks in advance. -- William, k6whp -------------------- "Cheer up, things could get worse. So I cheered up and things got worse."
Mike Fischbein All Messages By This Member #16517 Here's the service manual:? Try the "NO VISIBLE DISPLAY" troubleshooting chart on page 242. Good luck! -Mike toggle quoted message Show quoted text On Wed, Nov 29, 2023 at 3:52?PM k6whp <k6whp@...> wrote: Sorry for the undisciplined pleas for help but does anyone have any thoughts on a Tek 2335 that powers on and juts displays a spot and no sweep? Just need a suggestion or two to know where to start debugging as I am not familiar with this scope. When the unit sits for a while, it comes to life and seems OK but then loses the sweep. Thanks in advance. -- William, k6whp -------------------- "Cheer up, things could get worse. So I cheered up and things got worse."
k6whp All Messages By This Member #16518 Mike, Thank you. If/when I discover the problem, will post resolution here. William, k6whp -------------------- "Cheer up, things could get worse. So I cheered up and things got worse."
搁别苍é别 All Messages By This Member #16519 开云体育 From? my notes- Do not remember the actual symptom whether just a spot initial turn on then vanished or nothing on the screen..I think it was nothing.....anyway, on my 2335 the issue was on the Z axis- R113 burned A15 board near Q14?? (location 2E pullout 9,? HiV/CRT) none of the voltages were correct TP 30 bad was 14VDC, good should be square wave ~ 30V cause was shorted C108 (.005 1% polystyrene)...replaced with 5100 pf mylar film 1kv a better choice IMO. The trouble shooting flow charts worked great...made it easy there is an error in manual 6-17 item 22 torque spec is 1.5 Ft -pounds or 18 inch pounds ( Rev 1984) other than the trimmer R47 (ch1 gain) needing to be replaced correctly...just do not want to disassemble again...so the tacked R is fine for now. good little portable scope! 搁别苍é别 On 11/29/23 5:33 PM, k6whp wrote: toggle quoted message Show quoted text Mike, Thank you. If/when I discover the problem, will post resolution here. William, k6whp -------------------- "Cheer up, things could get worse. So I cheered up and things got worse."

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