Hi check out what I scored on ebay for 99 Yankee bucks. Oh, he's nothing of Beauty Joy Forever A Fluke Pm 3370b Combi scope dual analog and digital jobby 200 meg samples per second and don't worry about that. Uh, 10 gig sample per second repetitive equival equivalent time sampling? Rubbish. That's just garbage.

But uh, 200 meg samples per second? Not too shabby. It's got uh, 260 megahertz, um, analog channels. This does actually come in a four channel uh version. It's only got 8k of digital art memory, but still a very useful scope.

and if it works, it's an absolute bargain. for 99 us dollars, it was sold for as non-working parts only. can you get anything better on ebay for under a hundred bucks? Possibly not. And this thing is absolute gorgeous.

Uh, condition? Yeah, it's got a couple of little marks on there, but absolutely fantastic. It's got the cowl seal on it like this and the B and C's looking really good condition. The tilting bail here absolutely fantastic Nick, so it looks like it hasn't had much use at all. so I'm hoping that this thing works.

now. I don't believe it. I have to check, but I don't believe it came from a professional test equipment seller and I've got a an exclusive video on my Odyssey channel and also supporters have seen this video as well where I unbox this thing and I the interesting story about the courier driver who actually delivered this thing. Anyway, this is actually not a fluke.

this is actually a Phillips Um and I might have to do a separate video on the original Pm3370. This is the B model, but the original 3370 actually dates from 1970 and it's an old school analog one. But I found this glorious document. I'm going.

yeah, I'll definitely do a separate video on this. I'll link it in after the fact. and the backs in. Fantastic Nick.

Look at this. It's got the Gpib and Rs 232 interface as well full remote control, which you can do via the Rsr232 interface. Sadly, it doesn't have any of the extra functions. It does have the Z-axis intensity modulation, which is, uh, fantastic.

if you're for a litigious figure. Xy Mode fanboys. you can do some great stuff when you add an external signal to vary the analog intensity of the beam, which is fantastic. Um, doesn't have any gating output or anything like that.

There is an external trigger input because on the four channel model, the external trigger is not on the front, it's on the rear and it's got a memory backup here. Uh, which is not the Uh calibration. It's just like the user like the last user settings and well, uh yeah, these have seen better days and I would hazard a guess that these are the original batteries that were in there. made in Holland.

thank you very much. As is the scope. Ah, beautiful. Anyway, it does have a universal switch in supply so I'm I'm just gonna rather than take this apart, I'm just super keen to actually power this thing up.

I don't know what that is down in there. it's uh, no, right? So let's power this bad boy up and see what I got for my 99 Yankee bucks. I see she goes bang. Um, hopefully it doesn't have any uh, Reefer madness.

Uh, capacitors in there. But fingers crossed. Here we go. Oh it beeped.

Fan that? That's good. Beep beep. I did take the batteries out. Anything on the screen.

Intense trace intensity. Oh yep. Yep. Oh Winner Winner Chicken dinner.

Text Text intensity. It's coming up the focus. The text focuses a bit. No, no, it's it's coming in.

Text focus is coming in. Oh, that's beautiful. And this is all digital. Have a listen to this.

You can hear the focus beeping like that. So this is a multi-turn thing. Oh, that screen is sharp as attack. Look at that.

Wow. I have no doubt this thing like it's highly unlikely. You know once you get a scope if you get it on ebay and if you can see like photos of, um, the item at least if it has a sweep on there. um, you know it's a good bet that you're not going to have, say, two failed uh, vertical channels.

uh for example. So it's a good bet that one of the vertical channels is going to work. especially if you're getting the text and you know all the digital stuff is going to be working and it's likely all the digital sampling. It's likely this thing is a hundred percent working.

I'd be very surprised if I find anything failed on this. So yeah, this is just gorgeous. Probe adjust Winner. There's our position.

Once again, this is digital. It's going B beep. In fact, that's rather annoying. I'm gonna like.

and we can turn our text on and off too. Oh, there we go. So we've got all our menu and everything else. Amplitude? Yeah, it's buttons.

it doesn't have like old-school knobs for your um, horizontal and your vertical. So you bet you get what you get and you don't get upset for a hundred yankee bucks. So there we go. Look at that.

That is a winner. Whoa. Whoa. It just died.

Ah, did you see it? It just switched off. There's no the magic smoke. hang on. No.

oh are you kidding me it. I was just bragging that this is how good this sucker was. I thought I had a winner winner chicken dinner. I was bragging.

ah Kamagatsa, Here we go. I'll try it again. Okay, that sounds good. She's come back.

Not a problem. So yeah, so it looks like and it's got delayed time base too. Very nice. So if I leave this running I wonder if it'll um, just it again.

So it looks like it does have some sort of like a potential power supply issue. What's Tb mode? Oh, time time based mode? Okay right. Alt Chop: Okay, Yep. Auto single.

All that sort of jazz run, stop switch to digital. So let's actually try the digital actually. So there's our single shot. We're still in analog mode.

Here There we go. We're in digital mode. You can see the samples on there. Can I actually magnify? Yep, Yep.

I can magnify that and look. it's showing how much memory it's showing. The memory and the position as well. Isn't that beautiful? This is a very nice combi scope.

I like it. still very handy. It's only got 8k of memory, but that you know that's good enough. For Australia, that's all you need.

Geez. When I was a boy like, that's not much more than the 16. That's only half of the 16k that came with my original Rygold Ds 1052e scope, which had 16k. This one actually does go up to in the other models in this series.

The four channel ones does go up to 32k. This one's got 8k I believe, and we've got measurements as well. We've got cursors peak on off, bandwidth, limit, envelope on off. Yep, that's analog and that's digital.

There you go. That's digital mode updating. Fantastic. You can see how digital mode a bit more noisier than the older analog.

I've done a video explaining why digital scopes are noisier in quote marks. Okay, it's been like a few minutes. It hasn't died on me yet. Graticule illumination does that work? Turn my studio lights off? Yeah, it's there.

Geez, you can bail. I can barely see it up the top there in the shadow. Geez, you'd have to really be in the dark. So look, I can measure the frequency.

Uh, peak to peak. There you go. 58 millivolts peak-to-peak Fantastic. Curse the limit and statistics and can do pass fail testing.

Oh well, I'm gonna have to Rtfm on that and cursor limit statistics as well. This has got some really advanced stuff in it. This is a really powerful Scott Compy Scope this one. hands up.

if you used one of these. um, back in the mid 90s. Um, yeah, I would have killed that one of these back then. Jeez.

and I can actually get uh statistics on the Uh peak as well. Check that out. But of course all that vanishes. once you're in analog mode.

you've got to go into your digitals so we can go average mode. There we go. I've just smoothed that out with eight averages and it's very fast updating too. I like it and we can get peak peak detect, which makes it look fuzzier.

Of course, it's going to detect the peaks bandwidth limit. Um, that's the 20 megahertz bandwidth limit. 20 megahertz bandwidth limit because that's become the de facto standard for like, power supply, uh, noise measurement over the 20 megahertz range? Um, that's one of the main features, so it's just like a de facto standard thing. Anyway, Is there like a dodgy cap in there or something like that? we'll have to do a uh, tear down video on.

maybe? Well, there it goes. There it goes. I got it. I can hear it.

There's a real high frequency repetitive thing and you saw how all the high voltage Crt stuff actually collapsed in there and stuff like that. So it's you know there's something over time is causing that. There we go, Fans kicked in, all the relays went click. Yeah, there's a slight issue with the power supply, so this will not be a repair video.

This is just look what I scored for 99 Yankee bucks. That's interesting because the batteries would hold the digital focus settings right. That's why I don't have the battery backup in the back so it doesn't hold the focus and the intensity and trace and all that sort of stuff. which is all done digitally.

So when you power it up, you've got to reset it back to normal. So it's not an analog scope in that actual respect works as an analog scope, but it's got like digital uh controls whereas these would normally be like a single turn. uh, focus control. and oh yeah, there it goes again.

Yeah, no, it's not going to last that long. Well got it open and look at. this isn't this beautiful. Um Oh Nippon Chemicon caps in there in the power supply.

Um where it looks like we've got a motherboard. Uh, down the bottom. Nice deep Crt. Look at that.

Beautiful. And then we've got um. two main. uh, like processor.

Uh, digitally. You know one might handle the display or something like that. That's a beast. We're going to have a look at that big ceramic processor.

It's got a Dsp. There's some off-board um, coaxes here. Very nice. So anyway, what we're interested in is the power supply up here.

and there's uh, it's just. it's beautiful. and there's no dust in this sucker whatsoever. There's our mains input over there, a little bit, uh, exposed.

but you know she'll be right. That was a sign of the times back then. I love the baseboard on the Crt. Look at the ribbon cable coming out of that, and there's check out that driver on top that driver board.

That's fantastic. It's got three Phillips jobbies. of course. they're Phillips Parts Phillips if you don't know.

Almost like every component used in. like modern, uh, Tvs and Crts and stuff like that. So um, and they invented I Squared C. Of course, it's Phillips, you know, trademark? I Squared C.

So yeah, they did absolutely everything. So you'll find a lot of uh, Phillips, um, silicon in this, I'm sure. But anyway, look, the fan's got its own nice little compartment over here. This is all just beautiful.

This is all. Looks like one big injection molded plastic piece actually to try and keep the weight down. That's very nice. In fact, all of the uh chassis here is all plastic.

Um, it doesn't have a metal, uh, base. There's the base of it. Uh, there's a little bit of metal up here. but yeah.

basically. Anyway, um, there's all your, uh, vertical stuff and look at it all compartmentalized. Look at this. Um, yeah, it's all labeled this Dso Gate Delay Line down here.

We've got alt in and look. Um, as I said, like like all Phillips parts, right, These are all probably, um, like custom Phillips Silicon for this thing. Um, yeah. In fact, every single chip on their sofa is Phillips.

This is how big Phillips? ah, were. Um, they just made absolutely everything. Anyway, Um, yes, this is the physical. Uh, they use an actual analog delay line here.

Old school just to delay the, uh, time of flight. Um in this thing. Um, none of that digital rubbish. But yeah, that is just a beautiful example of a Pcb layout that they've gone to the effort to put in.

and they've numbered. look one, two, three, four, so row and column. So then in the service manual. Also, you can say oh, the chip in D1 failed or whatever.

It's just. ah, brilliant. Okay, so I want that power supply board. Uh, looks like they've cable tied that in so nobody's gotten into this thing before.

so I'm going to break into there and get it out. Have a squeeze because you want to get the whole thing out. uh, to give it a visual. My only criticism with this is that there's no ejector handles to get them out nicely, so you wouldn't believe it.

all. This beautiful design as a sneaky pain in the ass plastic clip right up under there you can't see and another one right up under there you can't see. Yeah, Painting the ass clips to get that power supply board out. I can't even see the clip.

Oh, finally got it. But ah, that was worth it. Isn't this thing beautiful? Look at it. Ah, it's bright and shiny.

It's ever seen that many shiny Nippon Chemicons. You'll be pleased to know there is no reefer madness in this thing, so it ain't that. Anyway, I've had a fairly decent visual over this board and I am not seeing anything yet. I'll have yet another visual, but then I have to start measuring stuff and then I might have to go to the schematic.

We have the full schematic and something is, uh, like failing after some time and the other thing is like there's no convenient test points like on the top of this board. So like measuring stuff while it's like in circuit and powered up in the chassis. That's actually going to be hard. Anyway, I asked in today's live stream i do a live stream every Saturday and everyone said oh, look, leave the repair to a separate video so I will.

sorry. And there's nothing obvious on the bottom either. So yeah, not seeing it. I'll just briefly.

uh, show you the other boards here because there's some interesting stuff. This is, uh, the main acquisition board, obviously. Look at this Gorgeous color-coded off-board coax connectors here. Um, absolutely fantastic.

They're all color-coded the wiring. The matching cables have color codes in them. Absolutely beautiful. They're down here as well.

There's a couple more over here and these are obviously our signal in coming in from the Uh front end. These two are obviously the analog to digital converters. There's a two channel. uh, this is a two channel model, so you'd have another board.

uh for that and um, then it looks like you might have some latching. Haven't looked at uh, part numbers here, but um, there's some other custom Phillips parts down here. I don't know that might have something to do with the triggering or something. Don't know.

Not going to look into the details, but look at this jobby, this is a custom Asic. I guess they call it Dalek. Uh, and then we've got the sample memory here. These are our 2k srams of pop and there's matching ones on the bottom there as well.

genuine bots. I'll show you another body in a minute, but isn't this a fascinating package? This is none of that Bga rubbish, right? This is a pin grid array. Okay, fantastic, but check it out. They got two bypass caps on top of the ceramic like that, Is that how big the dye is? I can sort of like see a mark in there, but yeah, isn't that fascinating? They must have had, um, like the embedded uh pads in there going through the ceramic, um to the inner um layers.

So yeah, fantastic huh? Have you ever seen that before And then after the memory, we've got a what looks like a, um, a bat batch? um, I assume that's a code name for yet another custom Asic. So what this what that's doing there? I don't know. Um, another Phil's part and a Ti 320 Dsp processor. Everyone goes wild.

yet more. Phillips Phillips, Phillips Phillips. Now, I don't know what these things are. It's almost as if would they be like, maybe, uh, delay lines or something.

Digital delay lines? I don't I don't really know if you do leave it in. comments down below. Anyway, date code of most of these chips, um, dates from 1999. So yeah, this thing would have been built late 99, early 2000.

And check out these badges here. I posted this on Twitter. isn't it gorgeous? They obviously decided that this needed a bit of shielding and they've put it down to a couple of years here and a pad over here and stuff. and they've done it with that chip up there too.

So that's that's the body of the week. and eagle-eyed viewers would have noticed all the right angle traces and everything like this on here. This part of the layout is obviously auto routed because a no human could would could possibly route traces like that. So yeah, um, it could have a combination of auto and manual routing.

and then our other card here. Uh, this is just I o So this is our Gpib and uh, serial Gpib connector and serial interface there. I don't know what the missing chippy is that looks like our flash. um merry our flash.

Uh, like operating system. There's nothing else much doing. There's a couple of Mitsubishi parts, uh yeah. some more Phillips jobbies.

That's the Ieee and Serial interfaces. but yeah. and I showed you that Crt driver before as well. That's just gorgeous.

And then the neck board as well. Very nice. It's buried away. I won't get it out.

but there you go. There's just a brief, uh, tear down. This is not meant to be a tear down, it was just a hey, look what I found. Scored for under a hundred bucks on Ebay and you can find these two.

Do your research, Find some old scopes that you like. Search for not only uh, working skates but also search for parts non-working scopes because often they will list them without knowing you know or they just don't want the hassle of you you know, actually returning them because if you buy it parts not working then you can't actually return the thing. Um, so yeah. But in this case, um, it's fully working apart from and the power supply just dying after.

you know, 10 15 minutes and with a bit of work I'm sure we can, uh, fix it up. So there you go. So that's almost a winner winner chicken dinner. But anyway, that is a very good score for under 100 bucks.

Let us know in the comments down below what? Uh, if you've scored a scope for under 100 bucks, can you beat this one? But it might be hard to beat this 22 year old Combiscope. It's still, you know, a reasonably serious and useful bit of kit. So anyway, if you liked it, give it a big thumbs up. As always, discuss down below: catch you next time.