Service manuals, schematics, eproms for electrical technicians
MULTIMETER UT33B SCH
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METER
SERVICE MANUAL
METER
SERVICE MANUAL
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Good luck to the repair!
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- Also known:
MULTIMETER UT-33B UT33B UT 33
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Sziasztok!
Kaptam ezt az autódiagnosztikai műszert hibásan,semilyen üzemmódban nem reagál a bemenetre.Állítólag hálózati feszültséget mértek vele, és feszültség alatt Hz-állásba tekerték az üzemmód kapcsolót, akkor ment tönkre.Bekapcsolható, a display minden üzemmódot kijelez, de a mérő bemenetekről abszolút kuka.A kijelző jobb felső sarkában minden üzemmódban villog egy akkumulátor szimbólum, ami akár hibaüzenet is lehet.
Sajnos semilyen dokument nincs hozzá.Az áramköri lapokon nem látszik sérülés nyoma.
Kérem a hozzáértő tanácsaitokat.
Üdv.
Hi there,
After many years of good services, I made a mistake while measuring UHV (ultra high voltagel with my METRIX MX53) . I was measuring a voltage around 2500V DC with all the safety required, using a divider, to get only 1/50th of the voltage as I did many times.
But for some unknown reasons (I'm rarely distracted when playing with such letal voltage) , I didn't connect my clip at the divider but at the full voltage.
You understand that the MX53 didn't appreciate it.
I opened the multimeter, which is kind of sport as not as easy as it looks and found a resistor R1 (may be 200 ohms 5%, hard to read) completely exploded. I replaced it. I also found that 2 of the four varistors were shorted, changed them, I checked all the transistors, mostly SMD, but they all look fine as far as I can see. However, the multimeter is still not responding.
I have also found 2 SMD diodes that could also be shorted and need to check them more thoroughly...
I have very few chances to fix the meter but if I could put my hand on its schematic, It would be easier to track down the culprit, hoping it's not the proprietary chip in it.
So, if someone have (or could lead me to a link to it) the circuit drawing of the MX53, preferably, or the MX52 or MX54 which look close to it, just a few functions more and the PCB looks common to both as the MX53 has some locations not populated with components, it would help me to try to save my old companion!
Thanks in advance, any help much appreciated.!
Nota: METRIX is a French company, was also know as Chauvin-Arnoux.
Regards from France...!
After many years of good services, I made a mistake while measuring UHV (ultra high voltagel with my METRIX MX53) . I was measuring a voltage around 2500V DC with all the safety required, using a divider, to get only 1/50th of the voltage as I did many times.
But for some unknown reasons (I'm rarely distracted when playing with such letal voltage) , I didn't connect my clip at the divider but at the full voltage.
You understand that the MX53 didn't appreciate it.
I opened the multimeter, which is kind of sport as not as easy as it looks and found a resistor R1 (may be 200 ohms 5%, hard to read) completely exploded. I replaced it. I also found that 2 of the four varistors were shorted, changed them, I checked all the transistors, mostly SMD, but they all look fine as far as I can see. However, the multimeter is still not responding.
I have also found 2 SMD diodes that could also be shorted and need to check them more thoroughly...
I have very few chances to fix the meter but if I could put my hand on its schematic, It would be easier to track down the culprit, hoping it's not the proprietary chip in it.
So, if someone have (or could lead me to a link to it) the circuit drawing of the MX53, preferably, or the MX52 or MX54 which look close to it, just a few functions more and the PCB looks common to both as the MX53 has some locations not populated with components, it would help me to try to save my old companion!
Thanks in advance, any help much appreciated.!
Nota: METRIX is a French company, was also know as Chauvin-Arnoux.
Regards from France...!
Hello
I need service manual, or electric diagram, for Dana 4600 multimeter. Really please help.
Sziasztok!
A fenti műszerhez keresek rajzot.
Van belőle több, de mindnek más a hibája.
Mellékelek róla két képet.
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