Equipment Troubles and Troubleshooting

 The following tables contains a detailed information about probable equipment troubles, key symptoms and reasons of that and troubleshooting ways.


Table №1






Ways of troubleshooting


EEPROM chip data corruption.

1. During the PCI-card installation  process, only the one device with PCIVEN_14F1&DEV_8800 code  (for example, “ Prof 7300 DVB-S/S2”) was detected and drivers were installed just for that one. The system does not detect the second device with PCIVEN_14F1&DEV_8802 code  (for example, “Prof 7300 DVB-S/S2 TS Capture”).

ID-codes of the devices are visible through the Device Manager. For example, in the Prof-7300 DVB-S/S2 TS Capture, as follows: ”Control Panel”=>”System”=>”Equipment”=>”Device Manager»=>”Sound, video and gaming devices»=>”Prof 7300 DVB-S/S2 TS Capture” =>”Data”=>”Device copy code”.

2. All the devices detection and drivers installation was performed well for both devices (from point 1) but when an antenna is accurately tuned and all the settings of the viewer program are correct, the Prof IP DATA DVB-card does not produce the traffic flow. The statistics on PID basis (you should see it in AltDVB via the menu ”Tools”=>«TS Analyzer”, in DVBdream through the «Analysis”=>”Pid statistics”menu) displays a blank window. The available PIDs is not listed on   the Prof IP DATA program request).

The first 8 EEPROM bytes of  Prof-6200 V1.0,Prof-7300 V1.0, and Prof-7301 V2.3 cards can be damaged in the case of card power supply failure. This means that the cards installed in PC sre equipped with a power unit of poor quality or the power supply does not meet the energetic requirements.

The percentage of cards with EEPROM defect is quite low (about 1 pc per 2000-3000 pcs) even taking into account that junk used by some buyers as a power unit.

When one of the first 4 EEPROM bytes is damaged, the symptom #1 is observed, and when some bytes from the second part of 4 bytes are damaged, the symptom #2 is observed.

To check the Prof DVB-cards EEPROM content and to recover it, if necessary, you can use the EEprom Recovery utility. The utility beta-version operates with Prof-6200 V1.0, Prof-7300 V1.0, Prof-7301 V2.3 cards, and is available to download at:



 Mechanical damage of L3 coil in Prof-7300.

Damage of L3 coil  (the highest element in a black cover in PCB Prof-7300), or L3 bonding corruption. This means the coil is “staggering” (moving from side to side) or broke off from PCB.

L3 coil is not properly placed in PCB Prof-7300. When DVB-card is being installed or unplugged from PCI-slot carelessly, it may result in coil damage.

When inserting the Prof-7300 card in PCI-slot, you should hold a DVB-card by its edges carefully, trying to avoid touching the L3 coil. In Prof-6200 an analogous coil is located in more suitable place and is not a subject to mechanic damage. In Prof-7301 and Prof-8000 cards the coil of such a construction is not used.


LNB power circuit  abruption due to cables connection  performed “on the go”.

New devices drivers detection and installation were made without any problems, but the card does not provide a satellite signal reception. The card does not form a constant power supply to LNB (this voltage can be measured by the voltmeter connected to the LNB intput ( IN )) about 13 V at the vertical polarization and about 18 V at the horizontal polarization.

If, in violation of «Device Operation Rules», the cables are connected “on the go” (Prof-1100 and Prof-7500coaxial and USB-cables), it result in corruption of LNB power circuit.

Lack of locking because of converter power absence in the antenna cable.

More detailed reasons description is in question 16 of FAQ section.

You can (at your own risk) try to recover the LNB power circuits at DVB-card, that are in bad condition due to  the  "Operation Rules"violation. These are recommendations to help you in this case:

In this table transistors and a resistor (with indications on PCB) recommended for replacement of elements, which are on the blink because of violation of "Operation Rules" are enumerated.

See the Table 1 to point 3.

IThe indicated transistors may be replaced with analogous or elements close to them.

If it is difficult for you to purchase the low-powered P-channel MOSFET in SOT-23E package (APM2305 position) then you can try another variant: instead an invalid transistor that is on the blink, braze a jumper to the card (between D and S pins) and the LNB power switching will stop working (if PC or USB-card is switched on, power will always be supplied to the cable)but you can continue to use the card for satellite signal reception.


Bonding of DVB-card by a user.

There is an evidence of bonding if it is USB-device the bonding may be traced only after its case is taken off.

User could install some different electronic components.

This card is damaged by the user deliberately, and it is not subject to return or replacement.

Table №2


Card Element and Its Indication



1 kΩ 0603

Prof-6200 V1.0




Prof-7300 V1.0




Prof-7301 V2.3




Prof-1100 V2.1




Last edition: 02.09.2010