| Electronics > Repair |
| Rohde & Schwarz SMIQ03B with Error 110 Output unleveled; IQMOD: ALC failure |
| << < (11/12) > >> |
| drhex:
Probably same process as getting from 02B to 03B - you just need a factory install key. Can probably be reverse engineered somehow. Do you have info on the 6L variants? SOme around for parts on the Bay... |
| Jarek:
Angielski I also have a problem with SMIQ03 I have IQ Modulator version A240.1084.98.00.06 This is different than the ones described in the posts. Here are the transistors marked as( .H1 ) . There are three of them in series under the radiator. The casing is as in the photo. What kind of transistor is it? Does anyone have a diagram of this version of IQ Modulator? |
| drhex:
Schematic I have is for 1084.9800.01S. V102 is in there as SHF-88. Parts list for 1084.9800.01SA shows it as SHF-O186K4230TR made by Stanford Mine failed after sending it out to calibration. Soldering in another switch didn't resurrect it so bought another modulator and calibrated it myself. Worked reasonably well, +.5dBm off over the whole amplitude and frequency range. Can live with that. |
| Jarek:
Thank you Drhex You're right, it's SHF0186. My module gets very hot. I am looking for damaged elements. |
| drhex:
I have a few more or less broken modulator boards here in case you're interested. |
| Navigation |
| Message Index |
| Next page |
| Previous page |