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Ohmslaw
Приєднався 21 жов 2017
[Retroer] 80188 on ARM, aka DOS on Acorn computer #Dosember
Emulation in 1992. In this video I run !PCEm which is Acorns PC emulator suite for Risc OS computers. The emulator was designed to provide an 80188 based system so that DOS and DOS applications can be used.
From the manual:
The emulated PC is basically an IBM PC XT, but in more detail the emulated PC contains the
following components:
• Intel 80188 processor chip
• Intel 8087 maths coprocessor chip
• Intel 8259 interrupt controller chip
• Intel 8253 timer chip
• Intel 8237 DMA chip
• Intel 8255 10 chip
• Sound connected via 8255 chip
• Enhanced 101 key US layout keyboard connected via 8255 chip
• Serial interface (Intel 8250 chip)
• Parallel interface (output only)
• 3.5 inch 720K floppy disc (BIOS level only)
• External 5.25 inch 360K floppy disc (BIOS level only)
• Hard disc (BIOS level only)
• Real time clock (BIOS level only)
• MDA (not PCEmS)
• CGA
• EGA (not PCEmS)
• EGA+ (not PCEmS)
• Two button Microsoft bus mouse
• RAM (maximum 640K)
• ROM BIOS.
From the manual:
The emulated PC is basically an IBM PC XT, but in more detail the emulated PC contains the
following components:
• Intel 80188 processor chip
• Intel 8087 maths coprocessor chip
• Intel 8259 interrupt controller chip
• Intel 8253 timer chip
• Intel 8237 DMA chip
• Intel 8255 10 chip
• Sound connected via 8255 chip
• Enhanced 101 key US layout keyboard connected via 8255 chip
• Serial interface (Intel 8250 chip)
• Parallel interface (output only)
• 3.5 inch 720K floppy disc (BIOS level only)
• External 5.25 inch 360K floppy disc (BIOS level only)
• Hard disc (BIOS level only)
• Real time clock (BIOS level only)
• MDA (not PCEmS)
• CGA
• EGA (not PCEmS)
• EGA+ (not PCEmS)
• Two button Microsoft bus mouse
• RAM (maximum 640K)
• ROM BIOS.
Переглядів: 281
Відео
De'Longhi Caffe Corso not pumping water, loud buzzing noise (ESAM2800)
Переглядів 31 тис.3 роки тому
My De'Longhi Caffè Corso was not pumping water and making a loud buzzing noise instead. I had tried to prime the system but it still was not working. So here is the fix to replace the pump. The Caffe Corso is a lower cost version of the Magnifica. The model number of mine is ESAM 2800.
Halloween demo time!! Grusel on Atari ST
Переглядів 993 роки тому
Halloween demo!! We got this demo around halloween time when the Atari ST was the family computer. I thought this demo was very funny. Grusel by Eckhard Kruse on the Atari ST. Eckhard has a website: www.eckhardkruse.net/index.html Someone made a javascript version of this demo: stuff.frutbunn.co.uk/Grusel/ blog.frutbunn.co.uk/a-javascript-remake-of-the-famous-atari-st-grusel-scary-demo
Acorn A3010 Serial Port problem
Переглядів 744 роки тому
Acorn A3010 with an problem of not transmitting serial chars. Main motherboard PCB repair work
Atari ST - Tex Exceptions (Softville PD, DcDEM16)
Переглядів 565 років тому
Short video from playing a few tracks from Tex Exceptions Demo, On Softville PD disk DcDem16.
[Retroer]Acorn A3010 Running the original HDD
Переглядів 1325 років тому
The Acorn A3010 is back together after showing the internals (here ua-cam.com/video/A2RN9EzyOm8/v-deo.html). We have a quick look at start-up of Risc OS 3.1, the 3 button mouse, the CFS (compressed filing system) that was on the hardisk, and some of the customisation on the desktop as well as folders with custom icon.
[Retroer]Acorn A3010 Repair
Переглядів 5325 років тому
Quick video to show disassembly and what I did to repair an Acorn A3010.
Russell Hobbs 17888 3-in-1 panini grill (Part 3) - RESULTS!
Переглядів 10 тис.6 років тому
Video of 'the panini adapter' up and running, with a speedup section to show the whole 9mins 30seconds of melty mozzarella goodness. Crisp crust on the outside and gooey on the inside! The panini adapter is a solution to fix the design problem of the Russell Hobbs 17888 3-in-1 Panini/Grill/Griddle from getting too hot. See part 1 video that highlights the problem here: ua-cam.com/video/XchT4V5p...
Russell Hobbs 17888 3-in-1 panini grill (Part 2) - SOLUTION!
Переглядів 3,8 тис.6 років тому
In this video I present a solution to fix the design problem in the Russell Hobbs 17888 3-in-1 Panini/Grill/Griddle from getting too hot. See part 1 video that highlights the problem here: ua-cam.com/video/XchT4V5pQcQ/v-deo.html My solution is to reduce the heating power by shunting some voltage to another appliance. I have used a couple of mains sockets on a piece of MDF which are wired in ser...
Russell Hobbs 17888 3-in-1 panini grill (Part 1) - PROBLEM!
Переглядів 20 тис.6 років тому
So we got this Russell Hobbs 3-in-1 Panini, Grill, Griddle. It has a design problem and I have made this video to highlight it! It gets way, way, too hot. There are no settings for the thermostat, so it maybe ok for a steak, but just too hot for anything with bread. I am not sure how good housekeeping magazine rated this 71/100.... perhaps they didn't even turn the unit on: www.goodhousekeeping...
[EafD] Sonos Playbar Repair - Part 2
Переглядів 18 тис.6 років тому
Quick video I made on the fly whilst repairing a Sonos Playbar that wouldn't power on. Turns out after replacing some parts on the PSU it's now up and running - check the video for details on components replaced, and testing tips. FET = Toshiba TK6A65D, RS part 8962420 FUSE = RS part 2260585 Primary Cap = RS Part 7260754 PWM Control IC = ON Semiconductor FAN6300HMY, RS Part 7396074
[EafD] Sonos Playbar Repair - Part 1
Переглядів 64 тис.6 років тому
Short video I made on the fly whilst repairing a Sonos Playbar that wouldn't power on.
Glad I found this. Rather than try to repair the PSU I just cut the PCB in half just to the left of the mains inlet, sanded the traces to remove the copper mask, soldered +ve to the top and ground to the bottom. Bought a 6a adjustable PSU from Amazon, set it to 16v and hooked it up. Works perfectly. If the PSU fails no need to rip it all apart again.
My water light is flashing and even after trying new sensor and checking wires to flow metre it still cuts out after a few seconds, I tried steam but only works for a short time, keeps going back to flashing water light, don't know what to try next 😢
And now I understand why mounting position doesn't really matter. Thank you.
how to remove powerboard?
In my experience, Sonos is very unreliable.
One of my drive units makes a popping sound ! Could I pay you to repair it ? I’m curious
Mine did the same thing so bought a new pump and fitted, still got the same problem, what could it be?
Please reply sir
Please palybar continue white light on ... Not connecting wifi
HI ! I can't remove the tube under the PUMP. Is there something blocking it or can I pull it without problems? Thank you !
HI ! My de longhi tells me the red water sensor is flashing, as if there was no water...but instead the tank is full!! so it crashes. Do you know how to solve it? Thank you !
Hello. As a follow up - replacing with a new pump fixed my problem after trying so many other tips. Another contributor suggested if the pump sounded constipated - replace the pump. Grateful both your suggestions worked. Did you reapply hot glue to the pump as on the original? The fit seemed very tight to me. Thanks.
Thank you very much for your excellent video showing me how to replace my pressure relief valve. Your filming was really close up and very easy to follow. Much appreciated. David.
Thank you Ohmslaw. Although my knowledge of electronics is not enough to understand everything you explain, your videos did help to test the board and find what was wrong: one of the wires of the first filter coil (capacitor choke) was broken. Easy fix. The most complicated part of the repair is putting everything back together again 🙂
Thank you - very simple video that gave me the confidence to have a go, and fix the coffee machine. Happy days
So I have mine apart and one of the big capacitors blew. It looks like it sprayed across toward the rectifier with the heat sink and melted a small component. I don’t know what is was and the motherboard material is eroded a bit. Also the little black square thing has a hole in it. I don’t know what this part is either. Looks like screwed.
My playbar quit abruptly. I watched Part 1 and 2 and ordered the FET, Fuse, Primary Cap and PWM Control IC. As I read the comments, some had had bridge rectifier blow so I will order that. I have no idea what I'm doing so if everything goes OK, I'll put the parts in and see if it powers on!
Is it possibly to bypass the AC portion of the power supply and power the device using DC?
Yep. Connect 16v to the points shown in the video. Or do what I did and cut the PCB in half and solder wires to the top and bottom thick traces (top is positive, underneath is ground). Then remove the label on the read ports, remove three tiny screws and you can remove the mains jack (cut the wires first). You can then run wires out the back or fit a DC jack.
Very helpful vlog, would have been even more help if you showed how to get access to the main board!🙈👍🏽
There's always Part 1... 😏
Is you encors available
Great tip with the power supply instead of AC input. I was afraid to play with power supplies. Used a serial bulb circuit but of course it's still dangerous. Your way is great, I love it. Thank you ♥
Just seen this, i've got a loud buzzing and no water. I've changed Pump, Flow meter and anti drip valve... and i've got a loud buzzing and no water (also checked all the pipes). I'm desperate for a coffee and pulling what is left of my hair out right now. Thinking an air lock but have no idea how i get rid of that as of yet... ah well.
What brand of capacitors were used originally ? Just curious
I am not sure if you’re still interested in this, but maybe it will help someone else otherwise. It seems like the capacitors are Jackcon.
Wonder what specs are of the PSU. Worst case you can replace it with something else with about same specs (same or slightly lower voltage, at least same amp rating). That why I love external PSUs though many people hate them. So easy to replace when they fail and usually no point in trying to repair them - just replace. Usually it's no issue finding one that fits electrically and if using some odd connector just cut cables and reuse the old one.
Just reaching out to see if you have ever done a sub repair. If not, PLEEEEEZZZ
THANK YOU SSSOOOO MUCH!!!! That saved us A LOT of money!!! Works an absolute treat now. 👍🏻👍🏻👍🏻
You Sir, are a life saver
Hi - I replaced my pump on the Delonghi Magnifica because it was not delivering water anywhere - the steamer now works but the coffee part is not delivering any liquid - any suggestions ? - There are no leaks . I’m an amateur but I’m willing to try ! If so do you know where I can get the parts and directions to repair myself? Thank you
Gents, had the same issue what I have done:bought descaling pack, have put one in and added 0.250ml of vinegar. Set it on cleaning option about 4 -5 times. All back to normal now. Hope will help.
I have the same,, bu mine is done after 2-3 min..
My Sonos playbar was not powering up and I was fortunate enough to find this video. On mine the PET had blown as you could see a tiny burn mark on it. Anyway I changed that, capacitors/fuse and bridge rectifier.....I happy to say it's all fixed and running again. I can't thank you enough for the info you provided here as I wouldn't have been able to fix it without this. Saved me a fortune and saved the planet too. Well done.
Please assist with a Sonos sub power, I cannot fix mine as resistors are destroyed.
Not solve my problem. No Coffe only water
😂😂😂😂 🙈
You don't have to replace the pump as long as its buzzing, that was air pocket and all you have to do was to turn your hot water knob on, the pump isn't good at pump air out in its normal frequency, and with the shot burst of pulse from the hot water, it does the trick, that works on many other machines as well, include a lot of semi auto machines.
This was more helpful than the video, thank you
Thanks for that, fixed it first time
My Delonghi does still buzz, but just limited water comes out. So sounds like there could be air pocket in the line. By “turn the hot water knob on”, do you mean just run the pump without the coffee cup and coffee? It didn’t work for me after several runs. I noticed (or remember) that the pump used to have two distinct “buzz” sounds. One is a low “hum”, another a louder “buzz”. It was during the “buzzing” period that the steamed water come streaming out. I don’t have the louder “buzzing” sound anymore and only a trickle of water comes out. Any suggestions?
@@wyt168 Is ur Delonghi a superauto machine, if so, it should have a hot water outlet, no? turn it on, let the hot water runs for 5-10 seconds, then, brew a shot.
@@checkwhatsleft4565 : Thx for the reply. Mine is not a superauto machine. However, mine has a setting for a "foamer" (on the side of the machine). Taking the hint from your video that air bubbles could be trapped in the line, I tried to switch between "foaming" (which generates steam to the foamer) and "brewing", so each time I switch, steam would come out from the drip outlet that holds the espresso cup. I tried this a few times, and it seemed to have done the trick!
Hello. Main it’s blow the fuse every time. What is in the short ?
-No on/off switch in the unit. You'll have to use the switch on the wall, or wire in your own switch in the plug or the wire -Tends to scorch food. -Very poor heat distribution. -Temperature is not adjustable. -Height of the upper plate can't be locked - it always presses down on the food. So you have to fiddle carefully with the placement of the food (get it exactly centered or it tilts and you end up with wedge-shaped bread because of the uneven pressure), and for soft foods like vegetable burgers the weight of the food tends to crush and deform them. -The temperature is set way too high. It scorches a lot of food before cooking them through. For example, if you're making sandwich toast you have to apply quite a bit of pressure on the handle to get the heat to penetrate through and melt the cheese, as otherwise you will just end up with burnt bread and cold cheese. -The heat distribution is extremely uneven. There is a hot spot running from front to back on the bottom plate about 1.5 inches from the right-hand edge. I'm guessing that's where one of the heating elements is. Any food placed in this area gets instantly burnt and inedible. The only solution is not to place any food on this hot spot, which effectively reduces the available cooking area to barely large enough to cook two slices of bread. After 7 months of using this toaster, the non-stick coating in this area has been burnt off, and it sports a visible layer of carbon because any grease or oil or cheese or crumbs from the food that make contact with this area burn immediately and are very hard to scrape off. - I JUST COPPY PASTE AN AMAZON CUSTOMER REVIEW. WE EXPERIENCED EXACTLY THE SAME THINGS. KEEP AWAY FROM THIS PRODUCT!!! 👎👎👎👎👎 www.amazon.com/gp/customer-reviews/R1CDXJUKTVP5JJ/ref=cm_cr_arp_d_rvw_ttl?ie=UTF8&ASIN=B002MRS1LY
Hi mate, thx for the video. Can you really test a switching power supply with dc input? My problem is, i don't won't to buy a galvanically isolated AC power suppy to test a switching power supply at home (but don't wan't to work on the main directly).
The first thing happening in a switch mode is that AC is rectified to DC perhaps with a little filtering to get a nicer load on the AC kurve. So unless there's something really special about you PSU that expects and uses AC for something then yes you can power it using DC instead.
@@HifiCentret Thx mate, will try that :)
@@HifiCentret And thank you answering on a video that is 5 years old :) .
Thank you for this video, fixed our problem and the machine is working fine now! Well done!
Could also be an air blockage which is cleared by running water through the steamer. This resolved my issue
Thanks... fixed it for me too
Mine was fixed too!
Same for me, hapenned after refilling water tank. Ran the steam tap to clear out the air. All good now.
How do you remove air?
@@sisqoszilard turn on the machine and pull water through the nozzle, if there's an air bubble trapped it should resolve it
Can anyone tell me the value of theThermistor hidden near the power leads - mine has blown to bits & cannot identify its value?
Hola, buen video y explicación, cómo lo desmontas el panel dónde va pegado la fuente de alimentación. ?
hola te han contestado como se desomonta, esta pegado y no veo como sacarlo?
Thanks for the video...I learned that I probably shouldn't take mine apart!
Have you repaired a SONOS Sub Gen2 device ?
After cleaning the machine this tip worked first time.
Hi coud you please give me the specs of the Fuse (glass) you have put in place in the power board? Thanks
YOU NEED TO PRE-HEAT IT FIRST BEFORE PUTTING FOOD IN MATE, READ THE MANUAL.
Thanks for the video. What was wrong with the old pump?
My playbar can't factory reset ,just solid white light .who know problem?
there is a circuit for this amplifier ... the on and off relay is triggered ... it constantly clicks but does not turn on ... does not react to reboot