I watched half the video knowing that the problem was the jumpers 😄 Back then, making a PC work was very difficult, compatibility between chipsets, CPUs, and various cards was a lottery. This video is fantastic, highly enjoyable, and perfectly understandable! Very informative!
Thank you Sir, indeed we forgot how cumbersome setting up a system was back in the days. Particularly with low quality hardware! Thanks for watching and for your kind words! They have a special meaning coming from you! (Che hai finito di taglia’ la scatola con il seghetto? 🙂)
Kudos to you for not hiding your mistake! Just discovered your channel, watched a handful of videos and got to say I'm loving the content. Love the fact you're taking us all on your journey of learning.
The strand of shielding worked great to repair the trace. Its alot cleaner then the enameled wire and I am certainly going to give that a go when ever I need it. Very good fault finding again and I really enjoyed the video.
It wasn't my idea! :) But yes, much better than enamelled. Now, what do I do with those three spools of enamelled copper wire I got? :) Thanks for watching!
Tony , your videos are always so funny and inspiring! Thank you for showing us here all your triumps but also all you failures Every time I atempt to repair something I ALWAYS go with the mind set that it is not working because I am doing something wrong and that I dont have enough information. SO many times I've seen failures that pointed to "burnt chips" and "catastrophic failures" that were after all just some bad contacts or wrong jumpers
You're very welcome! Yes, I know that feeling well! Sometimes we overthink! On the "it's all my fault" subject, I recommend this Shuttle motherboard repair video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pEeNqD2FOHQ.html :) Have a great day!
Oh, that was so familiar :) I spent so much time hunting phantoms just because I mixed the jumper orientation, or the documentation was wrong for particular mainboard revision.... Nice video!
Hi, Tony, thanks for another awesome video! I was also puzzled by that 16.7 MHz output and thought it might be a failure one of the components those configure frequency in frequency generator circuit. Tend to overcomplicate things probably as much as you do :) One positive outcome out of you misplacing the jumper is you now have some practice in drag soldering ;) Plus, those soldering joints were looking very suspicious anyway, won't hurt to get them resoldered. And you've got the experience. So many benefits out of one (not embarrassing!) mistake. Great the repairing ended in a success! Also, I remember back in the days my father taught me that before trying to solder the enameled wire you need to remove the coating with a [not too sharp] knife by stretching it between the blade and a thumb multiple times, turning the wire after a stretch. But it takes time, so, of course, the shielding from mic cable is way more convenient to use, good to know.
Absolutely, so not 100% wasted time! Still, it felt a bit silly, particularly because I moved that jumper to the wrong position myself :) Thanks for watching!
Great video Tony👍🏻 Luv it ❤… you just show how to trobleshoot the jumper setting problem if we don’t have any referrance for the motherboard.. so thank you..👍🏻
Wire wrap wire makes good bodge wire. The sound driver may be related to CPU instruction set. Early 486 boards has a 2GB hard drive limitation, you may also need to enable large LBA or similar setting in bios chipset settings.
I knew you set JP12 wrong from the beginning of the video because I have this board and just recently set it up. But I did not know JP12 set a 1/2 PCI divider, so thanks for determining that!
@@tony359I pulled out my M918 today and experimented with this a bit. I found that the system will work either way (1:1 or 1:2 PCI) but the jumper JP18 *must* also be set appropriately. If you select 1:1 with JP12, JP18 must be open. For 1:2 JP18 must be closed.
I made a 100 of these kind of errors, and I know I am not an exception, just like you are not. What does help in a situation like this, is to have a friend around.
Nice video Tony. :-) I am a programmer, sometimes it takes several days to find out why the code is not working, and the reason, missed comma:-) Go ahead! And good luck!
Great info and video, I have an M915 PcChips board with the most peculiar errors that I've been unsuccessful with. This is giving me incentive to give it another try. Thanks.
That was a great video. I love learning about how to approach troubleshooting. Even if it's something else in the end. I mean... even Saint Adrian had an Amiga that diagnosed the heck out of, only to find out that all it needed was reseating the chips, just last week.
Well, setting jumpers can be tricky. Today we have Internet but I remember a story from the back of the days when I was forced to configure 486/586 board without the manual becouse it was missed. It was trial and error excersise but finally I have managed! Btw PCChips before Pentium wasn't that bad. Funny thing is that I just received 286 PCChips board as a gift :)
Great gift! Well I am told the 918 was also available with fake cache so not sure about the "pre-pentium" era! :) But if you get one with proper cache and proper chipset, well they work :) Setting up a Mobo with no manual is an interesting task :) Thanks for watching!
@@tony359 Well PC Chips engineers were able guys :D. Regarding jumpers - on many motherboards it's not only clock-divider-voltages but internal cache as well (WT/WB). And jumpers can be placed in both directions (90 degree one to other). So yes, with no manual it was interesting task. More over - I had no oscilloscope and multimeter. But I had something what do I don't have now - planty of time.
Great video Tony. They do say the jouney is just as important as getting there :-) The jumper markings a really terrible on that board. From what I can see, there is a line between pin 1 and 2 under the plastic of the jumper. How hard would it have been for them to just print a 1 or a dot there? Keep up the good work. I look forward to your videos.
There is a line indeed! Granted, I should have invested a few more seconds at the beginning - maybe the manual was giving some clues - but I tend to be impatient and then I just got in the troubleshooting rabbit hole LOL! Thanks for watching!
I ended up buying a PCChips M918 board with fake cache. It had a broken transistor (the big one) for the 3.3V power output, so I had to find a similar transistor to replace it with. I then removed all the fake cache chips and put in real sockets. Getting the cache to work was a real pain in the butt, ended up using oscilloscope to buzz out all the address and data lines on the cache chips until I found a small trace break in the cache jumper selection block where I damaged a trace from removing the fixed wires to install selectable jumpers. A small bodge wire and she is fully working with cache. So yeah, a little of my own soldering error there.
I learnt just yesterday about of the existence of "fake cache" M918! I'm glad you managed to swap the chips for real ones, I'm sure the board feels much better! And well done for finding the broken trace! Must have felt good when the board finally booted up with some working cache!
@@tony359 It is a bit faster with the added L2 cache ... but this board is already pretty quick and has a decently fast memory bus, so not as much difference as you might first expect. The M918 will also take EDO RAM in addition to Fast Page RAM and gets some pretty decent memory performance speeds out of EDO RAM. This is kind of rare for 486 based motherboards, as EDO RAM was really more of a Pentium chipset thing. As much as PCchips boards feel a bit like junk, they must have done something right because so many of their boards are still ticking along some 30 years after manufacture.
It’s the ‘side light’. They have pros and cons. In fact I discuss that on the Joyalens video. The ring light I have is so convenient I’m struggling to justify another (expensive) item on my desk. But thanks for mentioning and for watching!
@@tony359 Just finished watching the video. Great content as always! Those pins might have worked, but they were definitely on their way out, slight motherboard flex and we end up with intermittent fault, the worst kind.
I can see tons of computers being returned because "faulty" - and damage done - indeed. It's in fact amazing where we are today in terms of plug an play. Thanks for that and for watching!
I read your comment and I had to go and check!!! You are right but I have to say it's barely visible, the pins are covering it 99.9%! They could have made a thicker line or anything. Good hint though for my next time! Thanks for watching!
@@tony359 I caught only the tiniest glimpse of it on the jumpers with the red links. Could definitely be more obvious! Or maybe it is in the manual. Love your work. 😄
on a shuttle hot 597 with hot 255 soundcard i had to set irq and dma for parallel port to differnt setting also primary intr from primary to secondary in the bios or got windows protection errors in windows 98 se the mainboard also refused to boot or turn on after i resoldered the via southbridge ic with flux and did not proper clean it under the ic and between the pins
Nice thorough video. Can i ask your oscilloscope, where do you attach the gnd lead? Is it the keyboard connector. Thanks Also what purpose is there for 16mhz on a pci slot?
Usually the keyboard connector yes as it has a nice place where to clip. I need to make sure it’s grounded first. Could that be that the clock generator is referenced to the CPU clock so that 16.7MHz would output 33Mhz with a different CPU? Is that generator just a multiplier? Thanks for watching.
It depends on the BIOS but I am pretty confident 8 beeps is no video card (or not detectable): www.computerhope.com/beep.htm But I'm sure there might be a board where 8 beeps is bad CPU! I could be wrong too! :)
Brilliant people can make silly mistakes like the rest of us .. I’m pretty sure it’s our subconscious just having a laugh. Mine is a bloody comedian.. lol.
Hi tony359, I have a motherboard like this but missing 2 transistores, Q6 and Q7. Do you have information about it to obtain and complete board? Thanks
@@tony359 many thanks, I will try to return back to life. I am follower of your videos and I love your technique to solve issues. Continue like this!!!
