Service manuals, schematics, eproms for electrical technicians

MFJ MFJ-259 1,8-170MHZ ANTENNA ANALYZER SM

METER - SERVICE MANUAL
Type: (ZIP)
Size
1.1 MB
Page
---
Category
METER
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
Good luck to the repair!

Please do not offer the downloaded file for sell only use it for personal usage!

Looking for similar mfj manual?
Document preview [1st page]
No preview item


No preview item for this file.

Possible causes:
  • No preview picture generated yet.
  • It is not a pdf file.
Advertisements
Please tick the box below to get download link:
  • Also known:
    MFJ MFJ-259 ANTENNA ANALYZER MFJ259 8170MHZ 259 8170 MHZ 170MHZ 8-170MHZ
  • If you have any question about repairing write your question to the Message board. For this no need registration.
  • If the site has helped you and you also want to help others, please Upload a manual, circuit diagram or eeprom that is not yet available on the site.
    Have a nice Day!
  • See related repair forum topics below. May be help you to repair.
Warning!
If you are not familiar with electronics, do not attempt to repair!
You could suffer a fatal electrical shock! Instead, contact your nearest service center!

Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, some files are archived,
so you need WinZip or WinRar to open that files. Also some files are djvu so you need djvu viewer to open them.
These free programs can be found on this page: needed progs
If you use opera you have to disable opera turbo function to download file!
If you cannot download this file, try it with CHROME or FIREFOX browser.
Translate this page:
Relevant METER forum topics:
EMG 1568-TR-4655 Táp javitás után Jel rákapcsolása nélkűl zajos fényvonal jelenik meg MEGOLDVA
Sziasztok ! Fent nevezet szkóp hibás ként kaptam szeretném meg javítani De nem vagyok jártas szkóp javításban Rajz alapján sikerült a tápot megjavítani Megvannak a feszek 15+ 15- 110v 40v ua723ic mind 3 cserélve Tr1 Tr2 Tr3 tranyo csere után, szeretnénk segítséget kérni hogy tovább Teszek fel képet
TERTA hangfrekis (csillapításmérő???) műszer beazonosítása
Keresem a képen látható műszeregység típusjelzését, kapcsolási rajzát, egyéb infót. A műszeren a 3-520.365-020, a két panelen 3-218.456-012 és 3-218.323-012 szám van.
TR 9158 labortáp a DC off lekapcsolása után a puffer kondenzátorrta 92Vot ad ki, és a DC leszabályzás lassú. A 92V megoldva.
Üdvözletem Mindenkinek! Megakadtam egy TR 9158as táp javításánál. Ez még a régebbi fajta, ahol nem potméteres a szabályzás. Az első indításnál a táp jól viselkedik, de amint a DC OFF kapcsolót lekapcsolom, a pufferkondenzátor felmegy 92V-ig. A DC OFF kapcsolót megpucoltam, a yaxley kapcsolók kipucolva, tranzisztorok megmérve, diódák megmérve, elkók cserélve, ic-k cserélve, forrasztások átnézve. Ha a fő puffer újra teljesen kisül, megint jó első ilyen dc on-off kapcsolásig. Meg ameddig jó, és lejeb tekerem a beállított feszt, az lassan csökken. Merre lehet még a hiba?
Looking for Metrix MX53 Multimeter schematic
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...! 
Similar manuals:
If you want to join us and get repairing help please sign in or sign up by completing a simple electrical test
or write your question to the Message board without registration.
You can write in English language into the forum (not only in Hungarian)!

E-Waste Reduce