| Date | Header | Text |
|---|
| 03-02-2009 | Buy MSP3411G A2 PQFP pacckage 80 pin | Hi!
I'm looking for MSP3411G A2 ,PQFL package,SMD, 80 pin.
Thanks a lot for any information , links or shops where to buy it!
[email protected] |
| 03-02-2009 | | Check the flyback capacitor(s) and any capacitor in series with the deflection coils. Replace if any of them has any bulges or cracks in the casing or if the value is more than 5 % off. Check the entire line output and driver area very carefully for bad s |
| 03-02-2009 | | Usually, such relays are used to protect the speakers from DC that can be supplied from the amp in case of a fault in the output stage. Check that the output stages get both positive and negative supply voltage and, if they are built with discrete compone |
| 03-02-2009 | | Still trying to isolate the fault.
During "ON" stage During "Off"stage
C815 - 142.3volt , 142.3 volt
C816 - 10.00 volt , 9.82 volt
C820 - 11.76 volt , |
| 03-02-2009 | | Thanks for the information and advice...
I have seen the Standby red LED over the power switch flash but I don't know how to initiate that. Now, with the power supply on, just the 5 mode LEDs flash. I can't seem to get any of those indications to cha |
| 03-02-2009 | | I just removed the mainboard and removed the filter caps. The "substance" on them is glue. It is just on the outside of the caps and the caps test good. (darn) |
| 03-02-2009 | Kenwood DVR-505. DVD/AV Receiver | Kenwood DVR-505 is a DVD player & Audio Video Receiver.
Unit won't power up. Looking for schematics and service manual.
Thank you for your interest and time.
Frank |
| 03-02-2009 | sony keyboard 9n1m | KFRMBA137A is keyboard model number.you can buy 1 on ebay item number 120367944230 |
| 03-02-2009 | | Check for Q803, is it ok? also check for C820, R828, D820 (MA4360L / 36V zenner), D819 (MA4100M / 10V zenner), D830 (MA4020 / 1.88V zenner) and D803 (photo coupler) are they ok too? |
| 03-02-2009 | Sharp UX176 Fax Machine Manual | Hello,
I was given a Sharp UX176 fax machine, but there was no manual. Does anyone have access to one for me? I'd really appreciate.
Thank you.
Sincerely,
Kylari |
| 03-02-2009 | | I'd like to know how photo coupler in feedback loop, (if defective), would be having a bad effect on ONLY ONE of the secondary voltages? |
| 03-02-2009 | | If you have Horizontal drive out of the Jungle IC, what about at Q502 base / collector (driver) & Q501 base / collector (if your scope can handle it)(Output)? |
| 03-02-2009 | | What is the voltage at CN204 pin # 2? Also at pin # 3 (at standby and at power on attempt)? |
| 03-02-2009 | power cosumption? | Hi guys:i bring up this topic because i came across a forum that discussed the power consumption of Satellite Receivers on Standby,and somebody there said that the receivers consume as much power if receiver stays on standby as it consumes when turned on. |
| 03-02-2009 | becker be6627 | i had this cd/radio on my car but it stopped reading audio cds, so i removed it and i now want to use it as a home radio..problem is that i can't find any ac/dc 12volts adapter that can be connected to it so i thought of using an old pc's power supply.unf |
| 03-02-2009 | | jts,
Thanks to vtech's schematic, I was able to read voltages as follows:
CN204
pin 1 gnd
pin 2 pulsing dc from 0v to +11v peak @ ~ 2 Hz
pin 3 0.00 vdc
pin 4 pulsing dc from 0v to +11v peak. The voltage on this pin constantly pulses from 0v |
| 03-02-2009 | | The above voltages are taken with power "on". With power off, voltages are all 0.00. I cannot get it into standby mode.
The remote control has no effect with unit on or off. |
| 03-02-2009 | | Looks like SMPS is defective. I assume from schematic that 5.6Volt is a standby source and should be present at ALL times.
Do you have a DC power supply? You could substitute your own 5.6 volts on that line and see what happens. |
| 03-02-2009 | | anyone please help as to why my lag plasma tv might be stuck on standby with just red led :cry: |
| 03-02-2009 | | Yes, I can come up with 5.6 vdc.
Do you suppose I should be able to disconnect the SMPS from the circuit and then feed the 5.6v in its place? The transistor Q201 also has to have a positive bias on its base to pull up the relay. I don't know if th |
| 03-02-2009 | Surplus vintage scopes, meters, components, aircraft parts | This is a warehouse that is being liquidated. This collection was built up from WW2 onwards into the 80's/90's. Much of this equipment came from the Douglas Aircraft plant in Tulsa, OK. We most brands of scopes, meters, and other items. We even have 300 |
| 03-02-2009 | Replacing Vertical Output IC on Sony KV 32V65 TV | I need to repair a Sony KV 32V65 TV. I need to replace the Vertical Output IC.
Can someone help me identify the part i need, by part number and where I can purchase it?
Also, if someone could refer me to step-by-step instructions on how to find and |
| 03-02-2009 | | [quote:de46426e87="fpc3"]jts,
Thanks to vtech's schematic, I was able to read voltages as follows:
CN204
pin 1 gnd
pin 2 pulsing dc from 0v to +11v peak @ ~ 2 Hz
pin 3 0.00 vdc
pin 4 pulsing dc from 0v to +11v peak. The voltage on this pin c |
| 03-02-2009 | | Provided that there is no mechanical issue preventing the tape travel, sounds like a reel sensor problem. Is there any Lxx code shown on the display when it fails? If so, you have a bad reel sensor on the supply side.--not something for an average end use |
| 04-02-2009 | | Thank you vtech! I appreciate the encouragement.
No, I'm not a dealer, I'm just a guy trying to fix my daughter's and her husband's receiver. I figure if I can get it fixed, they may invite her mother and me over for dinner some day (I'll probably ha |
| 04-02-2009 | | Frank: I just sent you a complimentary copy of the parts and service manual.
and yes, it does include the schematics. Expect an email from yousendit.com
HtH
[email protected] |
| 04-02-2009 | | I couldn't find the 1M0380R IC anywhere but eBay... With shipping it comes to $20. It is in Malaysia and shipping time is 1 to 3 weeks. I imagine that means a month. |
| 04-02-2009 | | WOW!!
Thanks Paul. I just downloaded the manual. And plan to go through it now.
What a great gesture!
What a great forum this is!
Many thanks.
Frank |
| 04-02-2009 | | One source and part number:
http://www.partstore.com/Part/Sony/Sony/KV32V65/Sony/Sony/875998058/New.aspx |
| 04-02-2009 | | For anybody else who wants it, here is the link:
https://www.yousendit.com/transfer.php?action=download&ufid=bVlBT0NTTk01UjdIRGc9PQ
It will be valid for 2 weeks and/or 200 downloads.
Enjoy!
[email protected] :) |
| 04-02-2009 | | From looking at the block diagram of the Receiver, it [b:ab87fb4710][u:ab87fb4710]appears[/u:ab87fb4710][/b:ab87fb4710] the SMPS isn't designed to offer "protection". It is just sources(?) several low voltages for various points in the receiver |
| 04-02-2009 | Update | [quote:7e671b80fb="vtech"]What you are describing is identical to the issue which only affected the DVD operation cycle but I can not tell you for sure if there has been any change since 2007.
If it did not have the mod, I had a 98 percent success rate |
| 04-02-2009 | Spectroniq PLTV-3250 wont start | Hello
I am working with a spectroniq (proton) model PLTV-3250
LCD TV. The set will not start I found a series of bad electrolytic
capacitors in the power supply along with a small
surface mount transistor, all of which I have replaced.
The front st |
| 04-02-2009 | | Like I mentioned, there was never any schematic for the SMPS and I do not have the one I drew some time ago. It was not meant to be repaired and no doubt there is no real protection. It is time consuming but you can try to draw your own if needed or even |