- ! Safety warning ! -

This device uses several thousands of volts to operate, enough to cause electric shocks even if unplugged.
Do not perform any kind maintenance or repairs if you aren't experienced or trained to work with high voltage.
Do not open devices with high voltage warnings if you don't know any safety precautions.
The picture tube contains a vacuum that could implode if abused and mistreated, the flying glass shards can cause serious injuries.
Nobody here is responsible for any damage caused by unprofessional actions.

- 60Mhz Digital/Analogue hybrid Oscilloscope -

462x398 - 19,2KB 925x797 - 59,0KB 1849x1593 - 181KB

This unit was made in 1995 and features:

Digital sampling mode, along with a one-shot trigger mode.
Markers in both analogue/digital mode, showing time or voltage.
RS232 for output to an plotter or to download/upload waveforms.
Trigger modes for TV (video) signals, either H or V Sync.
Can trigger on mains power frequency.
Delayed Trigger mode.
x10 Horizontal magnification.
x5 Vertical magnification for each channel.
Dual trace output along with signal summed of both channels.
Channel 2 can be inverted.
Buffered channel 1 output, blanking input on the back.
Illuminated scale.
Handle can be removed.

506x368 - 11,4KB 1013x735 - 33,0KB 2025x1470 - 106KB	506x368 - 11,6KB 1013x735 - 33,8KB 2025x1470 - 108KB

This is what a standard colorbars videosignal looks like on this.
The time markers can also be set to freqency, also the digital sampling rate isn't that good as this is a rather early (and cheaply made) digital scope.

457x288 - 21,9KB 915x575 - 65,5KB 1829x1150 - 198KB	484x212 - 11,0KB 968x424 - 31,8KB 1937x848 - 95,4KB

The controls do get very scratchy and unreliable after a long time, spraying them with contact cleaner is very difficult. Some knobs are attached with a screw, use a T6 torx driver to remove them. Also a few pots are mounted to the case into recessed hole with a round nut, I unscrewed those with pointy tweezers. The rocker switches can be pulled off.

388x471 - 31,6KB 776x941 - 101KB 1551x1883 - 315KB	476x405 - 41,2KB 952x810 - 145KB 1903x1620 - 489KB	540x275 - 31,6KB 1080x550 - 95,3KB 2160x1100 - 273KB

It appears that this was manufactured by Goldstar, every PCB has their logo on it. There are power transistors mounted on the heatsink that use connectors, this was quite a common method back in the day.

540x274 - 25,8KB 1080x548 - 78,6KB 2160x1096 - 228KB	540x260 - 28,4KB 1080x520 - 88,6KB 2160x1040 - 261KB

Also it's quite annoying that many wires are soldered directly to the boards.
That's why I didn't disassembled the whole thing, only enough to properly spray the pots and switches.

540x300 - 31,2KB 1080x600 - 95,9KB 2160x1201 - 293KB	405x540 - 33,6KB 810x1080 - 99,1KB 1620x2160 - 281KB

The channel inputs connected with soldered wires and one input resistor each, to remove the bottom vertical-board it's necessary to desolder these connections. I think there's a PLA on the middle board, it is in a socket.

540x405 - 34,8KB 1080x810 - 101KB 2160x1620 - 289KB	540x300 - 31,7KB 1080x600 - 108KB 2160x1201 - 340KB

The digital board is the only PCB that has connectors for all wires, it also contains a oldschool SRAM based FPGA. The EPROM is a 27C512 64KBytes, you can download a dump of that right here.
Also, I did notice during reassembly that the one wire standoff at the CRT shield was loose, I reapplied that with new doublesided tape.

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