Download ASTRON RMA RMM RSA RSM V 25A POWER SUPPLY service manual & repair info for electronics experts. Download ASTRON RS35M service manual & repair info for electronics experts. ” TIP CAS. I ca IN ICAO. PвKE. | 39A. LM CR3 |. 3 A4. | IN 1 tci +. CI01 +. R8. 3 K. 10v. SCRI I.

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Please, do not make a copy of the downloaded manual and do not offer to sell it, just use personally to repair defective appliance! Also checked negative side of Aatron output: I had called Astron but they were not very helpful, only saying “it depends” and not offering any rationale.

Checked earth safety ground to chassis resistance: Two white LEDs with a single dropping resistor is all that is needed. Instead, contact your nearest service center! Now I’m hoping that older units were built better and this one will last me a good long while. July 31, The schematic is really all you need. If this is the reason, announce it with the blue man icon on the top and I remove it.

Sorry I just had to. If you are not familiar with electronics, do not attempt to repair! While the Astron Linear PS designs have changed through the years — largely due to changes in electronic components RoHS, obsolescence, etc.


I also thought maybe my meter lights were burned out, as some have noted, but on further searching found that since my unit has a fixed power cord, it’s likely older and never had meter illumination. It ended up being in one ground conductor that was not bonded correctly,it was a MCM cable that had 6 volts at amps running through it.

The Astron website appears to only have a catalog and no support information.

Not too much in there but you can never have too much info. As for manuals, I wasn’t aware they had one or why a person would need one. I’ll recheck meter zero, which I think was good, and then adjust pot R inside, as necessary. Had a typo above corrected in red. As for illuminating the meter, that is a piece of cake. I have seen this happen with a substation where we have this gigantic buried ground mesh.

For some new radio amateurs English is kanual second language, ra-35m can better understand some electronics concepts and repairs via video YouTube instruction or pictorial diagrams.

August 14, Powered by SMF 1. So, if you do not have any other sort of ground connection on the device you can safety bond the negative return to the earth ground. On further searching, I found a wealth of info here: Good luck to the repair!

Astron VSM DC power supply

However, I suggest you Google this for a more detailed and no doubt better way of doing this. This file mnual downloadable free of charge: I provided my serial number and they were able to tell me it was manufactured in May serial: I switched it on and just checked unloaded voltage with my DVM There is no preview for this item! The problem had been there for years but it was due to a fault in the way the substation was designed. The only way to find out is to try it I guess.


I cannot find anyhting on Astron’s website, except their catalog. April 27, 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 axtron. A new series of videos is being posted for common repairs and educational rs-35k troubleshooting. It appears you have a handle on operating the unit, even to the point of correcting astro errors.

Astron VS-35M Variable DC Power Supply gets an upgraded MOSFET over-voltage circuit

The only other related thread I found so far is: I found that site and mqnual it above also. Contact the site with comments or questions. When you get a transient lightning, fault, normal device switching it can behave in difficult to predict ways. You can login to do that!