PS this repair, when finished, will make a great repair story for GeigerCounterEnthusisatsGroup,? especially with you great pictures. My cameras are 20 and 27 year old technology.
From: "geoelectronics at rallstech.net" <GEOelectronics@...> To: "CDV700CLUB" <[email protected]> Sent: Wednesday, April 27, 2022 5:27:18 PM Subject: Re: [CDV700CLUB] Leni conversion #3
All readers, I second what Perter said:
"Even if 900V is not present, it might be intermittent, so exercise caution. It might appear while probing if there is a cold solder joint or a cracked trace ?"
Geo
From: "peter via groups.io" <epkoncept@...> To: "CDV700CLUB" <[email protected]> Sent: Wednesday, April 27, 2022 4:43:34 PM Subject: Re: [CDV700CLUB] Leni conversion #3
In the manual, the schematic pages usually show the nominal voltages. Perhaps, after the visual check you can probe the board for voltages. If -15V is not there, that's a hint. osc tr, or transformer is dead ?
Even if 900V is not present, it might be intermittent, so exercise caution. It might appear while probing if there is a cold solder joint or a cracked trace ?
Do you have any liquid flux ? I find that the easiest way to fix cold solder joints is to reheat the joint after applying flux. If you don't have flux, just add a little solder to each joint as you touch them up.
