case 1840/1845 Instrument panel Schematic

Hello.

Case 1840 Skid Loader.

Curious, where may I find the electronic schematic for the instrument cluster panel circuit board p.n. H436507 (?) This same panel exists on the case 1845c skid loader.

Two pictures, attached.

Thank you for any /all suggestions . .

I don't believe you will find a cluster schematic for the circuit board. This is where the schematic ends from Case.

GaryHoff / Thank You for reply.

The most detail which I have in the way of Wiring / Schematic is Enclosed attachment, here.

Still requesting / searching a Schematic for the actual circuit board.

that looks similar to my 1835C. I don't know that i have anything to help, but i'm curious what you are trying to figure out? My machine is physically functional but the electrical system is pretty defunct, so it's on the list to fix some day.

Hi wompus -
I was given the Indicator Panel of a CASE 1840 Skid Loader to repair. Yes, I am a Senior Electronic Technician. The Schematic for this Circuit Board appears to be proprietary information from CASE or their Outsourced Board Design Company " DIXSON, INC. " which is now out of business. I found one Heavy Equipment Repair Facility in Mid-West USA which has the Schematic, however, they will not release the information. Owner thought, that it would be a simple repair. I have been through the major portions and major component IC's of the board. However, with no schematic drawing it requires REVERSE ENGINEERING drawing of the circuit board. That is a lengthy process. Yes, It Can Be Done. It's A Lengthy Process . . . I have almost reached the point where - I am not sure if this repair is cost effective either from the Owners' or My Viewpoint !
We will see . . .

If you should have any leads to the Schematic - it would be helpful.
Thank you

I know that this is an old thread, but I have a similar issue. My board is the same as the one pictured. Nice picture thank you. That kinda helps me, but unfortunately the portion of the picture I need to see is washed out bu the bright light. Probably the camera flash. In the photo it appears that there is a missing resistor R48. My panel also has a missing R48. My panel has what appears to be "pins" soldered through the board that seems to be a broken off resistor. Anybody know anything about these boards? Is there truly a missing resistor? Anybody have an old board to sell? Or any help at all.

Your board seem's to be Identical to the above board, I mean,,the same board! If you are good at soldering, D4 and D21 need more solder. I would dab a spot of solder on "all" joint's to make sure of good contact. As for the resistor, I don't know but the board does look the same as previous.

You know what, give me a few days and weather permitting, I will remove my Instrument panel and take a look at the rear of it. I need to modify a few thing's myself, so i do need to remove it. Give me a couple, mine is the 1835c but I'm sure their the same board's.

Thank You. I should clarify that the photo that I attached is not my board, it is the OP's photo that I used for description of my problem.

My board is the same number as the photo as shown in the lower right of the photo, 032-34148B. I have looked at mine and found what I assumed is a missing resistor, R48. I compared mine to the photo in hopes that I could determine the correct resistor that I need to install in my board. Unfortunately the photo is washed out in the area that I need to see to make that choice.

Any help is appreciated.

RRock, couple of question's for you, Is there a backing on this circuit board? And why didn't you upload a picture of "your" board? i would like to see a pic of your board and, what are the "symptom's" your having?

Not sure what you mean about "a backing on the circuit board" so I will guess that you are asking if there is a housing that the board is encased in.

The board is encased in a plastic housing that is mounted to the ROPS of the machine.

I did not upload a photo of my board because the photo that the OP loaded was very good, other than the bright washout of the part that I need.

I do appreciate any help that I can get, but it has been a long day on another unrelated project. So I will take a photo of my board and post it in the morning.

Thank you again for any help,

Ron

Another long day for me, but here are photos of my board.

Ok, here's what I have for you. I've removed my cluster but I did not remove the backing, it was enclosed but i could see resistor 48. You will also see in the photo's I upload.
There is NO resistor in slot 48 on mine also. But I noticed R30 was badly damaged. These resistors are of high tolerance so keep that in mind. You should buy a "couple" of replacement resisters since a new one may burnt or heat up quickly until you find the source as to why they burn. i did see some water damage on the other end of your board and this could have been the reason. But I'm just guessing. As a retired Tech in this field, my guess would be there is more there that's meet's the eye. Good Luck and if you have any further question's, feel free to ask away. Resister R30 has a value of 19100 ohm's or 19K ohm's.

Very helpful, thank you.

Seems odd to me that there is not a resistor in slot 48. There are what looks like broken pins soldered in my board. But I don't know anything about electronics, obviously.

Yes this board is not in good shape. This machine has sat outside unused for 10+ years I am in process of bringing it back to life.

Are you interested in checking this board out? You clearly know way more than I will ever know. Happy to pay for your effort and time.

Unfortunately Ron, I'm in Ontario Canada and I am no longer in that field. I'm too old and my hands shake to much...lol If you "Google" some shop's in Iowa, I'm sure a "computer repair shop" would take a look at your board. Just inform them of resistor R30 color code " Brown-White-Brown-Red--(Brown) and that R48 should not be a part of it. There are several IC's and transistors they could cross reference with ECG etc, for a resistor to overheat like that, my guess would be some sort of short within a power transistor. You could also google your board Part number: H674342. I am still on windows XP so I'm having a hard time doing so.