I bought this tronxy x5s 2018 , didn’t have much problems with this printer other than bed leveling. But now im having problems with temperature, on filament melting points and heated bed temperature not reach 100 c ,it will only reach 70c… any insight with this stock unit no updates.
Hi!
It’s quite common for the thermistors (temperature sensors) to fail with age. Do they show a correct reading at room temperature? Then try heating the bed and double-checking the temperature with a thermometer. Do the two readings match? Is the bed actually hitting 100, but the sensor not registering that?
If it’s not a sensor problem; it may be that the bed heater has gone bad, but it is more likely that the power supply is failing to deliver enough power. Can you check the voltage on the power supply; does it dip heavily when the bed turns on?
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Furthering @easytarget’s point, you mention “on filament melting points” — if the nozzle and the bed both don’t get hot enough any more, and the problem started at the same time, I agree it’s likely a power supply problem.
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Since I don’t have the thermal tools I can not confirm the actual temperature. I do have volt. Meter…
This is how it came factory.
Well, two pairs of wires. The smaller white wires measure the temperature with a thermistor, and the larger red ones carry the power that heats it.
Then start with what you have
Measure the voltage from + to -. It is best to do this where the power from the power supply is attached to the control board, to avoid inadvertently touching the mains power wires on the back of the power supply.
Take one voltage measurement with the printer turned on and idling. Then set bed heat to 100°C and take a second measurement. Then set nozzle heat to 220°C (or whatever is appropriate for filament you have loaded) and take a third measurement. Post those measurements here.
Oook your instructions bit confusing. Yes 2 pairs. As where exactly to take reading from???
What is the measurement supposed to be on the voltage from power to mother board . And the voltage coming ot to bed.?
Filament is petg. Temperature for this is lower than abs. Ive never been able use abs on this printer even on day one.
The control board, not the power supply. You want to find the wires running from the power supply to the control board. They will connect to some sort of screw terminals on the control board. If it’s not obvious, please take a picture of the control board.
See on the power supply sticker you showed us: “12V 30A”
That means that the measurement should be near 12V. 30A means that it should be able to supply up to 30 amps of current while maintaining about 12V. (My hypothesis here is that it might not do that any more.)
Don’t try to measure the voltage going out to the bed. It alternates quickly between on an off in order to control the heat it provides (“PWM”), and your multimeter will almost certainly give meaningless readings. (That requires a different and more specialized tool)
240°C is a fine temperature to set the nozzle at to test, with PETG in it.
And no, without an enclosure you aren’t likely to succeed with ABS unless you are printing very thin parts. A heated enclosure makes a big different for printing ABS successfully.
Alright ,I’ll check in put terminal for power supply.
On static test. In idle. Read up to 75c
Over the years. I’ve bearly use this printer. Leveling the was always a headache. Need to print more brackets.
I don’t know what you mean here.
I don’t know what condition the 11.70V applies to.
Please start with the printer cold.
Turn it on, without heating either the bed or the nozzle.
Read and record the idle voltage.
Set the bed to 100°C.
Read and record the bed voltage.
Set the nozzle to 240°C.
Read and record the bed+nozzle voltage.
Report the numbers (don’t need pictures), clearly labeled which number is which.
This is the voltage meter reading from the power supply
If you don’t want to take and report all three voltage readings I asked for, then there’s not really any point in my trying to help. 
If you don’t understand what I’m asking for, ask for clarification.
Bed reads 12.36-- then 11.53
Nozzle reads 0-- then fluctuating from 6.70-10.45
Display reads Nozzle at 240