Treo 650 Audio Jack Fix, Part 1.
I have been fixing the Treo 600 and 650 of this defective and broken jack problem. I charge $75 plus $10 for USPS Priority shipping with insurance. I usually ship your phone out the same day. The fix is a permant fix and will not require to be repaired ever again. I leave no external signs of tampering for warranty purposes.
It seems that apart from the poor volume , buggy software and other issues, the Treo 650 also suffers from an audio jack of poor quality. Their are different issues with the audio jack, but the most common are:
- The internal speaker and speakerphone stop functioning.
- The stereo outputs only mono.
- crackling sounds with audio connector movement.
- jack is easily broken when using an adapter, and sometimes without.
If you have a good carrier that provided your phone or you bought it straight from Palm, you have a warranty that is good for one year and I would recommend replacing a faulty phone. Unfortunatly, many people bought their Treos from other places, and theses phones are also starting to come out of warranty. So, for the rest of us poor souls, including me, we need to look for other solutions. This article deals mostly with solving problem #1.
First, some general information. The problem with the jack, aside from its smaller size compared to its more rugged 3.5mm cousin, is the fast that it is a generic jack that is even less rugged and durable than a normal unswitched 3 pin 2.5mm jack.
The jack is of the switched type with one switch and 6 pins, one of which is redundant. The plastic housing being generic for the 2.5mm size, has a provision for 2 switches. The second circuit is the circuit that causes problem #1. It is basically a "switch" that is always connected, with the connector inserted and the connector removed. With gereral use, this switch opens, and causes problem #1. With a good board design this would not be a problem, but seems Palm initally had planned to incorporate a switch in that location and later changed their mind. An error in their Treo 650 developers guide indicating a switch in the problem circuit would seem to suggest a switch was planned but later removed.
Why palm even used a mechanical switch in the jack is hard to understand, since the Treo also has an electrical switch. My Audio Jack Hack , a 3.5mm audio jack in the antenna, taps into the audio source before the original jack and uses no switches, but the internal audio still switched off when I plug in my headphones.
- Install a program that overrides the switching
- Disable and bridge the mechanical switches.
The first is a good solution for people that cannot or will not take apart their Treo. Their is a drawback though, in that the electrical switch is also overridden and one needs to make the switch manually from internal speaker to headset.
The second fix requires some work, but will still keep the same fuctionality. It should only be attempted by people familiar with electronics and soldering. That fix is described next.
The tools needed for the job are:
- T5 Torx Driver.
- Small wire cutters.
- High quality solder tool.
- fine solid core copper wire.
first, take apart the Treo 650, as described in my Dissassembly Instructions. After taking apart the Treo, look at the ajck to see if there is any damage. You probably will not see any damage, unless the jack was broken by force, the damage will be internally. below is a close-up of jack. Signal1 is for left channel audio or for mic (with mono headset). Signal3 is normally grounded, or mic only with the special 2-in-1 headset.
Create a copper wire bridge between the two pads labeled switched signal1 and signal1. This mechanical switch only causes problems and is not needed. Below is a picture of the other side of the connector.
The electrical connection between the two signal2 pads should never be broken. Bridging the two pads together will make the jack more durable and will cure the "ghost jack" problem.
Please send me feedback or ask for help if needed.