On 3/5/2022 5:25 PM, James55 wrote:
Hi all.
@ Jim Raymond and Renee,
Glad to hear that they are pukka caps. I'm heading back to the store in the next few days to buy a small stock, as they had a tray full and they were relatively cheap. Hopefully they'll have a selection of values. Fingers crossed!
@ Cslim.
Two of the bridge rectifiers measure short on the DMM until the capacitor charges, then not, and I have been checking for shorts til I get dizzy, but I'll persevere.
The thing to note is if they *stay* shorted.? Ohms measurements rely on current, and charging a capacitor is dumping as much current as possible into a part (reads zero ohms!) until it charges.? Then the question becomes "where does it stop?"
Harvey
After the last several hours reading the manual, then probing and testing, as of now I've decided to focus on the reference voltage section and the +65v rail with all other rails disconnected at the AC input of the bridges.
There are no longer any direct shorts, although the 5v and +15 rails read around 6 and 14¦¸ to ground respectively. I keep hunting after following the schematics, however have not found any culprits as of yet.
One thing that did crop up was a Tek 152-0107-00 rectifier in the reference voltage section, which actually disintegrated as I lifted a leg. I am wondering if there is a reason I can't just use a 1N400x in it's place for now?
Anyway, onwards and upwards...
James
