Dead HP 35

Threaded Mode | Linear Mode

Dead HP 35

10-14-2024, 01:22 PM

Post: #58

ThomasF Offline

Member

Posts: 273
Joined: Sep 2016

RE: Dead HP 35

(10-14-2024 12:59 PM)AnnoyedOne Wrote:
(10-14-2024 04:25 AM)teenix Wrote: Be careful around the Cathode driver, it is a bit finicky when switching the LED coils, any upset may destroy it.

"LED coil"??? Do you mean current limiting resistor? I've never seen an inductor ("coil") near LED's.

A1

Then you should look closer to the classic internals ... Wink

Just under the LED's there are two packages of inductor coils ...

Picture taken from here: Inside the 35
Also check Tonys excellent paper about the internals of the classics: Classic Notes.

Cheers,
Thomas

« Next Oldest | Next Newest »

Messages In This Thread

Dead HP 35 - krazyk - 10-08-2024, 10:07 AM

RE: Dead HP 35 - teenix - 10-08-2024, 11:19 AM

RE: Dead HP 35 - Hiwi - 10-08-2024, 11:24 AM

RE: Dead HP 35 - krazyk - 10-08-2024, 12:09 PM

RE: Dead HP 35 - HPing - 10-08-2024, 02:58 PM

RE: Dead HP 35 - rprosperi - 10-08-2024, 10:46 PM

RE: Dead HP 35 - John Garza (3665) - 10-08-2024, 11:39 PM

RE: Dead HP 35 - krazyk - 10-09-2024, 12:18 AM

RE: Dead HP 35 - krazyk - 10-09-2024, 12:35 AM

RE: Dead HP 35 - krazyk - 10-09-2024, 12:38 AM

RE: Dead HP 35 - krazyk - 10-09-2024, 12:40 AM

RE: Dead HP 35 - teenix - 10-09-2024, 12:42 AM

RE: Dead HP 35 - krazyk - 10-09-2024, 12:49 AM

RE: Dead HP 35 - Geoff Quickfall - 10-09-2024, 01:16 AM

RE: Dead HP 35 - krazyk - 10-09-2024, 01:19 AM

RE: Dead HP 35 - teenix - 10-09-2024, 02:45 AM

RE: Dead HP 35 - HPing - 10-09-2024, 01:23 AM

RE: Dead HP 35 - AnnoyedOne - 10-09-2024, 10:16 AM

RE: Dead HP 35 - krazyk - 10-09-2024, 01:21 PM

RE: Dead HP 35 - teenix - 10-09-2024, 07:46 PM

RE: Dead HP 35 - krazyk - 10-10-2024, 02:50 AM

RE: Dead HP 35 - teenix - 10-10-2024, 04:51 AM

RE: Dead HP 35 - krazyk - 10-10-2024, 08:08 AM

RE: Dead HP 35 - Steve Simpkin - 10-10-2024, 08:20 AM

RE: Dead HP 35 - teenix - 10-10-2024, 08:44 AM

RE: Dead HP 35 - krazyk - 10-10-2024, 10:35 AM

RE: Dead HP 35 - AndiGer - 10-10-2024, 10:54 AM

RE: Dead HP 35 - krazyk - 10-10-2024, 10:57 AM

RE: Dead HP 35 - Steve Simpkin - 10-10-2024, 11:01 AM

RE: Dead HP 35 - teenix - 10-10-2024, 11:05 AM

RE: Dead HP 35 - krazyk - 10-10-2024, 11:06 AM

RE: Dead HP 35 - krazyk - 10-10-2024, 11:24 AM

RE: Dead HP 35 - teenix - 10-10-2024, 12:06 PM

RE: Dead HP 35 - Hiwi - 10-10-2024, 12:28 PM

RE: Dead HP 35 - HPing - 10-10-2024, 03:16 PM

RE: Dead HP 35 - AnnoyedOne - 10-10-2024, 03:30 PM

RE: Dead HP 35 - HPing - 10-10-2024, 05:15 PM

RE: Dead HP 35 - krazyk - 10-10-2024, 09:42 PM

RE: Dead HP 35 - teenix - 10-11-2024, 12:41 AM

RE: Dead HP 35 - krazyk - 10-10-2024, 10:08 PM

RE: Dead HP 35 - krazyk - 10-10-2024, 10:09 PM

RE: Dead HP 35 - HPing - 10-11-2024, 02:19 AM

RE: Dead HP 35 - krazyk - 10-11-2024, 05:34 AM

RE: Dead HP 35 - krazyk - 10-12-2024, 11:04 AM

RE: Dead HP 35 - krazyk - 10-12-2024, 11:35 AM

RE: Dead HP 35 - Geoff Quickfall - 10-13-2024, 06:05 AM

RE: Dead HP 35 - krazyk - 10-13-2024, 10:47 AM

RE: Dead HP 35 - krazyk - 10-13-2024, 10:56 AM

RE: Dead HP 35 - Geoff Quickfall - 10-13-2024, 04:39 PM

RE: Dead HP 35 - krazyk - 10-14-2024, 01:23 AM

RE: Dead HP 35 - krazyk - 10-14-2024, 01:25 AM

RE: Dead HP 35 - teenix - 10-14-2024, 02:40 AM

RE: Dead HP 35 - krazyk - 10-14-2024, 03:59 AM

RE: Dead HP 35 - teenix - 10-14-2024, 04:25 AM

RE: Dead HP 35 - ThomasF - 10-14-2024, 04:49 AM

RE: Dead HP 35 - AnnoyedOne - 10-14-2024, 12:59 PM

RE: Dead HP 35 - ThomasF - 10-14-2024 01:22 PM

RE: Dead HP 35 - teenix - 10-14-2024, 01:15 PM

RE: Dead HP 35 - AnnoyedOne - 10-14-2024, 01:29 PM

RE: Dead HP 35 - krazyk - 10-16-2024, 09:49 AM

RE: Dead HP 35 - krazyk - 10-16-2024, 09:52 AM

RE: Dead HP 35 - Hiwi - 10-16-2024, 09:54 AM

RE: Dead HP 35 - Hiwi - 10-16-2024, 09:58 AM

RE: Dead HP 35 - krazyk - 10-16-2024, 10:02 AM

RE: Dead HP 35 - teenix - 10-16-2024, 11:08 AM

RE: Dead HP 35 - krazyk - 10-16-2024, 10:07 AM

RE: Dead HP 35 - krazyk - 10-16-2024, 10:09 AM

RE: Dead HP 35 - krazyk - 10-16-2024, 12:34 PM

RE: Dead HP 35 - teenix - 10-16-2024, 04:34 PM

RE: Dead HP 35 - krazyk - 10-20-2024, 07:01 AM

RE: Dead HP 35 - AndiGer - 10-20-2024, 07:20 AM

RE: Dead HP 35 - krazyk - 10-20-2024, 07:23 AM

RE: Dead HP 35 - Geoff Quickfall - 10-23-2024, 03:21 PM

RE: Dead HP 35 - krazyk - 10-23-2024, 10:16 PM

RE: Dead HP 35 - krazyk - 10-23-2024, 10:40 PM

RE: Dead HP 35 - teenix - 10-24-2024, 01:01 AM

RE: Dead HP 35 - Hiwi - 10-24-2024, 06:41 AM

RE: Dead HP 35 - teenix - 10-24-2024, 07:04 AM

User(s) browsing this thread: 6 Guest(s)