| Author | Message | ||
     Josue Roberto Lopez Lobo (jorololo) Username: jorololo Registered: 01-2008 |
Hello, i need help with this diode MR 250/5, i have 210HD130-12AX7, in the manual appears 5KV A.I.V., physically says MR250/5, i want replace them, but anyone knows a good replace for this diode??? | ||
| Mike Kaus (mm210) Username: mm210 Registered: 05-2006 |
Exactly where are these diodes in the amp? I have one of these and they are not in it. If I knew where they are at in the circuit I could give you an idea of what to use. I don't see them on the schem either, at leat by that number. I'm sure they are a 1kv 3amp or something like that. Are you sure they are a diode? | ||
| Mike Kaus (mm210) Username: mm210 Registered: 05-2006 |
HMMMM-just did a quick google and came up with a mr25xx type diode that is very high current and up to 1000v so I have to assume that these are strapped over the plates or something. Can't think of anyplace else they might go. Let me know. This must be an export version maybe? | ||
| Josue Roberto Lopez Lobo (jorololo) Username: jorololo Registered: 01-2008 |
Thanks Mike, this diode is placed in pin 3 (anode)on the output tubes to ground(in two of the tubes, the two on sides), I asked a tech and he say me is a diode 5KV/250ma, but I'm not really sure, in some places says this diode(MRXXX Family) its a fast recovery diode, but only go until 1000V 3A or more(but not much more, like 5KV), the diodes I have aren't bad, but in the future maybe they blows up, and its good know a replacement for this diodes, here in Honduras its difficult ask a tech or someone, but I think in USA aren't so difficult, Mike, you have had problems with these diodes before? | ||
| Josue Roberto Lopez Lobo (jorololo) Username: jorololo Registered: 01-2008 |
Hey Mike, I send you an e-mail with a photo the place of the diode | ||
| Mike Kaus (mm210) Username: mm210 Registered: 05-2006 |
You know, I'm really sorry I never saw this thread again. I never got an email. I've never seen these go bad but I suppose anything is possible. I'll check in on the other thread. Mike. |