Looks great bud. U are very smart. I love the old commodore stuff. Like u said means crap to some people, but means alot to us! Way to go bud. Childhood memories ❤
I also had this exact 1802 together with my C64c back in the day. Must have been around 1990/1991. I do remember the colours when using chroma/luma was blend/low colour saturation when using the mid/standard position. Also, C64c with shortboards have lower colour saturation VS breadbins with longboards.
Oooh I’m outta luck with mine… I have the slightly earlier box-shaped 1802, acquired recently. After replacing the power switch (and making a button, as the original had been smashed with a knife or something being used to hold it in), I turned it on with some trepidation… …and I got a power light, plus a sound that I thought was horizontal-output 15kHz, but I now think it’s the power supply - a switchmode type in these. There’s no high voltage, no raster. I’ve poked around (with help from a good friend to understand the schematic) and I’ve found it has B+ (121V) and 12V. The latter is connected to the flyback, which is chicken-and-egg as I thought the 12V came from the flyback windings, not the other way around! It seems to disappear at the flyback windings, all being dropped across a diode on the way. There is a pulsed signal of about 13V at the base of the horizontal transistor, and the flyback seems to have the 121V available to it, but as far as I can tell, this isn’t creating any high voltage. I tried unplugging the yoke in case that’s shorted, no change. On an unrelated note, the 470uF and 1000uF electrolytic capacitors near the vertical deflection circuit were both lumpy and swollen like old batteries, and leaking. One measured as 54pF. So they were replaced, but no change of course. I think at this point I have a failed flyback, but I’ve ordered new 2S1397 horizontal output transistors even though it seems to identify as ‘two diodes’ on the tester, ie. not open or shorted. I read that it’s possible to test a flyback using a frequency generator, but I think my time might be better spent looking for a substitute flyback - the original being no longer available, I wonder if there is another at the HR Driemen site that perhaps has similar windings/voltages. Even if all the pins are in the wrong places, I’m sure I could adapt it to fit. I’ll update with what happens next in my quest to repair what is, by all accounts, not a very good monitor but one that I would love to see working :) Of course, I’m greatly inspired by this video, love the relaxing presentation style!
I used to have one of these monitors along with two C64 consoles and loads of accessories and hundreds of games but unfortunately as I went through my later teens my parents got rid of all of my unused vintage stuff😢
On the focus adjustment I like to use a jeweller's eye piece and with that you get a perfect dial in for the red, green and blue guns. Give it a go next time, you will see what I mean straight away.
For sure. The 1084's I have are both Philips versions and look beautiful after a tune up. This 1802 uses a Daewoo chassis and Orion tube, so it's looking alright for what it is but it's got nothing on the 1084
Don't remember the exact model, but about a year or so ago there was a Commodore monitor on ebay about an hour drive away. Passed it up because I really didn't need it, sold for $100 with 1 bid. 🤦
Nice job on the tuneup. Certainly looks much better and should be great for playing games now.
The one we had back in the day continued to be used after the 64 had been retired. Hooked up a VCR and it made for a nice little tv
Looks great bud. U are very smart. I love the old commodore stuff. Like u said means crap to some people, but means alot to us! Way to go bud. Childhood memories ❤
I also had this exact 1802 together with my C64c back in the day. Must have been around 1990/1991. I do remember the colours when using chroma/luma was blend/low colour saturation when using the mid/standard position. Also, C64c with shortboards have lower colour saturation VS breadbins with longboards.
Braver than me!
Great video. Love the calibration bit, made me chuckle 🤣
Oooh I’m outta luck with mine… I have the slightly earlier box-shaped 1802, acquired recently. After replacing the power switch (and making a button, as the original had been smashed with a knife or something being used to hold it in), I turned it on with some trepidation…
…and I got a power light, plus a sound that I thought was horizontal-output 15kHz, but I now think it’s the power supply - a switchmode type in these.
There’s no high voltage, no raster. I’ve poked around (with help from a good friend to understand the schematic) and I’ve found it has B+ (121V) and 12V. The latter is connected to the flyback, which is chicken-and-egg as I thought the 12V came from the flyback windings, not the other way around! It seems to disappear at the flyback windings, all being dropped across a diode on the way.
There is a pulsed signal of about 13V at the base of the horizontal transistor, and the flyback seems to have the 121V available to it, but as far as I can tell, this isn’t creating any high voltage. I tried unplugging the yoke in case that’s shorted, no change.
On an unrelated note, the 470uF and 1000uF electrolytic capacitors near the vertical deflection circuit were both lumpy and swollen like old batteries, and leaking. One measured as 54pF. So they were replaced, but no change of course.
I think at this point I have a failed flyback, but I’ve ordered new 2S1397 horizontal output transistors even though it seems to identify as ‘two diodes’ on the tester, ie. not open or shorted.
I read that it’s possible to test a flyback using a frequency generator, but I think my time might be better spent looking for a substitute flyback - the original being no longer available, I wonder if there is another at the HR Driemen site that perhaps has similar windings/voltages. Even if all the pins are in the wrong places, I’m sure I could adapt it to fit.
I’ll update with what happens next in my quest to repair what is, by all accounts, not a very good monitor but one that I would love to see working :)
Of course, I’m greatly inspired by this video, love the relaxing presentation style!
Great work! Solid tuneup. Thanks!
I used to have one of these monitors along with two C64 consoles and loads of accessories and hundreds of games but unfortunately as I went through my later teens my parents got rid of all of my unused vintage stuff😢
Well done.
On the focus adjustment I like to use a jeweller's eye piece and with that you get a perfect dial in for the red, green and blue guns. Give it a go next time, you will see what I mean straight away.
Philips tubes and circuitry always is the best in those monitors, PVM quality in my opinion.
For sure. The 1084's I have are both Philips versions and look beautiful after a tune up. This 1802 uses a Daewoo chassis and Orion tube, so it's looking alright for what it is but it's got nothing on the 1084
Ahw man, now I have the Super Mario Theme stuck in my head. Probably for the rest of the day…😅
Don't remember the exact model, but about a year or so ago there was a Commodore monitor on ebay about an hour drive away. Passed it up because I really didn't need it, sold for $100 with 1 bid. 🤦
Ouch
Great work! Excellent lunch break viewing!