68kMLA Classic Interface
This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.
| Click here to select a new forum. | |
| Hybrid from Portable on the way out? | |
| Posted by: Berenod on 2022-09-14 12:51:09 I have a fully functional, recapped Portable (m5120). Never had any problems with it. Hadn't used it in a while. Just today took it out to use for a bit, discharge and charge the lead battery a few times (stored outside the portable). However, with the battery fully charged (6.7V), the portable chimes and boots immediately to a happy Mac when a key is pressed, but once the OS is loaded (6.0.8 portable version) immediately a window pops up indicating that the battery is empty and the portable will go to sleep in 10 seconds (which it then does). Measuring on the battery connector on the mainboard, the voltage never drops, rock solid at 6.7V during the boot. When I connect the charger, voltage goes up to about 7.3V, when I then boot the machine it stays on, but a pop up window says the battery is on "reserve" power, and you can continue to work for a short time more. Battery indicator just indicates right on the "reserve" line, almost empty. The charge indicator (the lightning symbol) is on, and stays on, also if a take out the adpater. Visually, the hybrid seems to look OK, what might ne the issue? The painted resistors? They seem ook, can clearly see the tiny line in them (pressumably this line, bit like a scratch, is what creates the correct resistance). Any guesses? I kinda hope it would be one of the opamps, they would be easily replaced...  | |
| Posted by: Berenod on 2022-09-14 12:55:26 Whoopsie, accidentily put it in the PPC powerbook section... | |
| Posted by: LaPorta on 2022-09-14 13:22:10 Was the battery sitting for long, or do you have it stored with a trickle charger? | |
| Posted by: Berenod on 2022-09-14 13:25:24 Not that long, about 6 weeks? Tested with a 25 watt motorbike lightbulb, voltage hardly drops under the 4amp load! So I doubt it's battery related. It's a roughly 7month old sealed motorbike battery... | |
| Posted by: LaPorta on 2022-09-14 13:33:54 I agree then. TechKnight is your best friend here…why not ask him? | |
| Posted by: techknight on 2022-09-15 14:26:19 Bad hybrid or bad Q1, or both. Tech by Androda is making replacements. they are available. | |
Posted by: LaPorta on 2022-09-15 15:02:32Bad hybrid or bad Q1, or both. Tech by Androda is making replacements. they are available.You guys finished up the replacement? | |
Posted by: techknight on 2022-09-15 16:48:55You guys finished up the replacement? Yeah. I got a coupel prototypes and they work fine. | |
| 1 |