EEVblog Electronics Community Forum

Electronics => Repair => Topic started by: Sajiv on June 02, 2020, 09:20:19 am

Title: TTI PL330 POWER SUPPLY
Post by: Sajiv on June 02, 2020, 09:20:19 am

I have one  old PL33O , Received as a gift, but not in working condition, the displays are on, also possible to change the values,  but out put voltage at  the load is 0 v , can any one help to fix this!
Sajiv

Title: Re: TTI PL330 POWER SUPPLY
Post by: bd139 on June 02, 2020, 10:15:06 am

Got a few of these. Open it up and check the output switch first. They are usually what dies first.

Picture here inside: should be able to continuity test it while not plugged in.

https://i.imgur.com/ChJ0PCY.jpg

Title: Re: TTI PL330 POWER SUPPLY
Post by: jones42 on October 07, 2020, 11:39:59 am

usually there's two pieces of metal that connect the sense lines to the outputs.
Those are missing here. so it might help to connect the sense lines to the outputs.