TM 504 Power Supply Lab Checkin and a SURPRISE!

Рет қаралды 1,042

3 ай бұрын

First off let me say THANK YOU to all that have joined the lab and helped us get there we are today. Content is based of viewer questions and comments, and will continue to be.
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In this video we take a look at a TM 504 Power Supply that was send in by a viewer. I was asked to give it a once over and run it through my check in and evaluation to make sure it was up to the challenges that they are going to put it through in their lab.
** Repair exposes the Tech to mains electric and should only be done by trained personnel. Errors can be fatal. **

Пікірлер: 7

@Sigmatechnica 3 ай бұрын

Nice, i have this exact unit. I'm designing a nice modurn bench power supply plugin for the tm50* frames as the existing ones are 'a bit meh' by modurn standards and not that available in the UK

@EJP286CRSKW 3 ай бұрын

Dang me, is that where that nozzle got to? I've been looking for it for years. Seriously though, how does a spare part like that get into this unit? It's not as though it was a tool in current use that got left behind, like swabs in a surgical operation.

@electrifyingvids3545 3 ай бұрын

I see that you check the semiconductors on these units before powering them on. Are the devices on these known to fail? I have a Tek TM504, and I don't want it to fail and over volt anything it's powering. I have an SC502 which is my golden pride in my small collection of TM500 plug-ins.

@ZenwizardStudios 3 ай бұрын

They are not known to fail but I have run in to some that have failed, as the units are unknown to me I do check them as part of the check in process and 1st run through of the power supply. But then I am not to worried about them. Unit from all over and who knows where find their way to my bench so it is a matter of caution before I drop in some of my more exotic plugins. There are some plugins that don't even use the pass elements So this really can be plugin specific.

@markp5726 3 ай бұрын

I have a TM504 where one PNP pass element was bad. I didn't think to check, and plugged in a DC503 which used that element for regulating -33v up to -22v. It passed the full voltage to the rail, but it seems to have only damaged easy-to-replace transistors in the regulator circuit.

@EJP286CRSKW 3 ай бұрын

You can blow them up occasionally. Ask me how I know ;-)

@EJP286CRSKW 3 ай бұрын

They can be blown up any time.Ask me how I know ;-)