Press thinks Bed is 350 deg C whenever connected (Page 1 of 2)

Right now, It has the same thermistor. This is without the bed even on. There are people that know little about configuring 3d printers. I am about 10 feet below them. I have read every firmware update explanation I can find. They are all over my head. Is there a "Press firware update for dummies" book anywhere?

Yes, I am using the factory thermistor. The bed came with a new one, but was torn apart. I presumed the original would still work. Ive checked all my connections many times. cant seem to make a difference

Yes, they look good. Yes, I have a meter. I touched the ends of both wires coming from the thermistor and the meter changed.

Ok, I will check when I get home. Am I checking the wires going to the thermistor, or the board?

^what he said.

What's your room temp; about 64-66 deg F?

Then it seems that the thermistor and wiring is OK...check the board to see if you can find any evidence of a short.

I had a similar problem earlier this year. The factory bed on my Press was badly warped, making it impossible to print anything more than a couple of inches across. I modified the bed so that I could print on a much thicker piece of glass and while putting things back together again, found that the bed temperature was being reported as about 350 even though it was still cold to the touch. Worse, the firmware wouldn't let me start a print - a safety measure I assume.
To check the thermistor, I connected the hot end themistor to the bed thermister connector on the control board and the bed thermistor to the hot end thermistor connector. Since the bed temperature was still indicated as being 350, this pointed to the problem being on the board, although there was no sign of burning or overheating. Solidoole confirmed that the problem was with the board, suggested that I replace the board, then told me they were out of stock on boards but would have them soon. That was many month ago and you may not be surprised that I haven't heard from them since them.

I suspect someone with good knowledge of the board could help you test and repair it, but what I did was to recompile the firmware after editing the configuration file to indicate that there was no bed heater on the printer. Getting the firmware reflashed was a real ordeal. I tried lots of different ways and finally what worked was the procedure Solidoodle posted on their site. The instructions were not perfectly clear, but whatever I did finally worked, although I doubt if I could do it again. I also discovered that you have to be careful to use the firmware that was in use when my Press was manufactured. I have one of the early Press printers. Modifying the updated firmware, which is the only one Solidoodle had on their site at the time, screwed up the leveling procedure making it impossible to print, so I went through the whole thing again with the original firmware which was an additional pain to find.

I then bought a 24 volt temperature controller and a 24 volt power supply. Since my factory bed heater is still OK, I can use it, but have to control the bed temperature independently of the printer - not a big deal.

If I had been thinking ahead I would have written down all the steps in detail, but didn't.  Sorry I can't give you all the steps I went though, but this may help give somewhat of an overview of the situation.

There is another currently active thread on the Ramps 1.4 board which might help you in finding another board. With my factory board, the only thing that failed was the circuit for measuring bed temperature. Everything else still functioned after recompiling the firmware and reflashing the board. However, if I were doing it over again, I'd probably opt for a new non Solidoodle board instead.

Where is a good place to get a Ramps 1.4 board? I've been searching, but I'm not certain if everything I'm finding are actually complete boards.

Interesting. What did you get to control the bed?