IBM
Let’s talk about RTC options once again
Let’s talk about RTC options once again
#Lets #talk #RTC #options
“Necroware”
In the past I made some videos about RTC module repair and replacement and also open-sourced a drop-in replacement for …
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Awesome job! I regret throwing out my old rtc chips now 😅 could have reused them if it's this easy to get to the parts.
But also, you can give 5 Volts to DALLAS "black box" Vcc (pin 24) and it will work, yes? So, two diodes, resistor and small Li-Ion battery can solve problem with drain internal battery 🙂
Be careful heating the resin/battery up, the cell will explode if it's overheated!
Building some of your RTC modules has been on the todo list for awhile now, the biggest barrier being acquiring the BQ3285 IC's. After watching this I went into the drawer full of dead Dallas/Benchmark RTC's and revived a couple using this method. I used a sacrificial socket and my hot air rework station, a pair of old needle tipped tweezers worked wonders for chipping away at the epoxy. While I still want to build some of the RTC modules you designed, I do love being able to recondition existing RTC's with the parts I already have on hand. Cheers!
THX 4 vid
Chemical solution: Ethanol, paint thinner, adhesive remover. Heating a litte bit make the process faster.
Use protective equipment
Test this way.
I think it is great the work you have done to make the replacement modules. I have seen others revive long dead systems with them but have yet to have a need to try it myself though I probably will at some point given the old systems I work on. Sorry you catch flack the times they don't work for people. Matching up the exact right part in something decades old in every situation is complicated. The work you are doing is appreciated and please keep it up.
This reminded me of how I cooked transformer on kitchen stove to replace its winding 🙂
Headache of SGI INDY. Where are you was at the end of 199x, when we pay a 200USD per each proprietary written RTC chip…
Правильнее будет использовать слово "Depleted" (истощённый, исчерпавший ресурс) вместо "Empty" (пустой), речь идёт о картинке на превью. Потому что увидев слово empty, можно подумать, что это микросхема-пустышка и внутри ничего нет, а это не так. Впрочем, это я придираюсь, так-то контент достойный, теперь я хотя бы буду знать, что делать с такими материнскими платами, если они ко мне в руки вообще попадут, спасибо 🙂
I really can't stand how effortless and easy you make soldering / de-soldering look – could you at least pretend to struggle a little to make the rest of us feel better 😝
Excellent video. Will be sure to try this with the pile of dead RTC chips I've amassed.
The battery you used is just a little too small for those pads. The correct size of battery for that pad is a CR2325.
I've lerned a lot, thank you Sir!
Try boiling the encapsulated packages :))
Very great video. I've saved every RTC module I've ever found and now know how to disassemble them with hot air.
I'm very curious about your "Experiment" that looks like a CF card w/PCB in a socket (IDE?) on the motherboard in this video. What is it that you made a "long time ago"? Thanks!
P.S. Liked & subscribed: FOR SURE!
В принципе можно было и не выгибать вывода в нужную стороно. Достаточно было откусить узкую часть и к широкой подпаяться.
I wonder if there's some cheapish 5V tolerant CPU these days that can completely simulate those Dallas… just needs a breakout board and enough components
Are you joking me, All those Dallas modules were just a chip with some pins bent up, a few parts added and a resin box glued atop it. If your looking to go deeper. Find an EISA bus motherboard. These boards usually had a rarer Dallas module that was not the standard one, as it had space to store the EISA configs.
Beware of the toxic fumes which escape from heated resin and be careful when heating Lithium batteries because of extreme fire risk.😁
That is great knowing how to salvage the ICs from the epoxy.
There are many different kinds of resin, so the C64 power supply stuff might not react the same way. Definitely worth testing, though!
Very useful information, I'm going to use the heat trick as I found out two of my older desktops/towers in the attic has one of those nefarious RTC modules.
just tried this. it works great! not overheating the plastic is an important tip. thank you!
Warming the pins a bit when trying to bend them back may avoid more breakage