Question about Polaroid PDV-0701A Portable DVD Player

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Same problem, no power to DVD, not damaged or dropped.

Exactly what are all the pins, circuits, etc and how do I "check" them??? More clarity would be helpful.

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Hi

what do you want to your Portable DVD?

Posted on Jun 12, 2008

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Portable dvd player Not working


If it does not power ON, the main power regulator section circuit [SMPS] board is faulty. Check and replace damaged component/s at it. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

Dec 26, 2015 | Televison & Video

1 Answer

TRUTECH/DAEWOO DVD RECORDER/VCR DRT-S810


Hi!
did you check the +5 volts if exactly? and the +9voltsif exactly? now if you got over voltages in the said voltages you got abnormal power oscillation! or did you check the regulator? maybe the ADJUST Pin is in abnormal function! and try to unload the power board then you can test run the power board by checking the voltages in secondary.

Nov 07, 2007 | Televison & Video

1 Answer

Its a Toshiba RD-XV49DT DVD/DivX/VHS Player/Recorder Combo, replaced power supply board as was blowing fuses found components have shorten out and now after replaced board, video works and i think hard...


The controller circuit (usually a small board connected directly to DVD drive - it is either part of the drive or a sub-assembly which is attached - and contains several ICs and small capacitors and a lot of surface-mounted components on its copper side) is probably faulty, possibly due to the original bad PSU (which you have since replaced), chances are the original faulty PSU has damaged this circuit - usually DVD drives operate around 12V DC or so. The digital controller circuit/board not only has the EEPROM/CPU etc. on it, but also has a servo supply - for the DVD (the VCR servo supply is on the motherboard). This powers the disc tray and traverse unit. The controller is not serviceable at component level; it must be replaced and in some cases, the DVD drive must also be replaced where the board is not separate to the drive. This may not be economical.

It may just be a simple case of a blown digital controller circuit - but be warned, this board is not cheap - it is part of a 'module' (the disc drive and controller together = DVD module), and you may not be able to obtain the board without a new DVD drive. Up to you what you do from here, and you might be lucky in terms of the motherboard and HDD - no damage there.

Apr 11, 2011 | Toshiba Televison & Video

1 Answer

NO LIGHTS ON BUT PLUG FUSE O.K.


No display? No function? No error codes? Short answer: the power supply has a fault. My guess is IC1 is short-circuit (this regulator has a habit of failing in some model DVD recorders) probably due to crook electrolytic capacitors and/or shorted/leaky zener diodes. This may not be economical to repair, since this is a 2004 model; more than 5 years old. That doesn't mean it is NOT fixable, but it might be expensive in terms of parts and labour.

The best course of action is to check IC1 (usually marked as STRxxxxx and may be a 5-pin device) and replace all the electrolytic capacitors (uprate their values and working voltages where necessary), and check the diodes and fusible resistors (these might be open circuit). This is the simplest and cheapest option. Have a look first. Electrolytic capacitors are easy to spot - if they bulge or their tops appear domed instead of flat, their heatshrink covers have peeled or blistered, and/or they have leaked stuff around their pin base on the board (this will look like dark glue but it is electrolyte). Check the copper side of the power board for corrosion from any leaking caps. If any corrosion is present on that side, chances are it may have damaged surface mounted components, making it U/S.

If you are in any doubt about the above, take the unit to an authorised service centre, get a quote on the likely repair costs, what parts are involved, etc., then you can decide for yourself after that whether or not you wish to pursue the repair to restore your combo unit to full operation.

As I warned above, it might be expensive and may not be economical to repair; but it is up to you. These were good units when new, and their DVD drives caused less trouble than the recent DMR-EZ series. If all else fails, you could probably obtain a good used/refurbished PSU board for this model from an online parts store or similar places.

Mar 05, 2011 | Panasonic DMRES30V DVD Recorder/VCR Combo

1 Answer

Phillips PET 706 portable DVD player. Won't play DVD's.


1. The pin, right side in the back of the dvd-tray-lid, which triggers the switch on the motherboard of the dvd player is broken.

2. Not impossible, but unlikely: the proper switch on the motherboard is broken, corroded or just full of dust and does not close the circuit.

Solution to 1.: you need a new lid with intact pin, or glue an improvised pin on place of the broken one.

Solution to 2.: take the whole player apart (not difficult at all), while not disconnecting any cables, so you can now test the trigger switch (momentary switch) manually and see if something happens (on screen appears loading)
ATTENTION: BEFORE pressing the SWITCH: cover the laser lens with a piece of paper - do not look into it - it can damage your eyes!!!
If nothing happens by manually triggering, try to spray some electronic cleaner (fat and oil free) into that switch, while pressing it continously. If still nothing happens, disconnect battery, DC, de-solder that switch and look at mouser.com or any other electronic parts dealer to get a MOMENTARY switch with exact identical dimensions, etc.
Solder it in, everything should be perfect now.
Good Luck

Apr 05, 2010 | Philips PET741 Portable DVD Player

2 Answers

Screen wiring pinouts accoustic solutions dvd 263


hai

if you check in www.allpiouts.org and www.stockcable.com tells you which pin is what. i have the same system and i tryed only using 9v input not any video input. it only stays in standby the remote does nothing when i try to use it. if you got any solution please email to me in eddiechellam@yahoo.co.uk

Sep 27, 2009 | Durabrand Portable DVD

2 Answers

Power on but nothing else


My DVD22 did exactly the same. The solution mentioned by shelompidid not apply to me since my model already had the fix factory fitted.

The other problem mentioned on page 21 of the service manual did the trick for me, although the complaint does not seem to be directly relavant:

"Complaint: Will Not Read Disc; Other Functions May Be Disabled
See h/k service bulletins HK2004-03 and HK2005-02, as the issues covered there involve similar
symptoms.
Probable Cause: EC19 and EC20 (1000μf 16v capacitors) may be defective in the power supply. This can be checked by measuring the +3.3v and +5v voltages that are associated with EC19, 20 to see if they are low (more than 0.1v low). The SPMS output voltages are marked on the PCB adjacent to the large 13 pin header. While there is only one 3.3v pin, there are several +5v pins, and care should be taken to measure the correct one(s), which are either two +5v pins approximately in the center of the header.

I could actually see on the power supply board that these two caps were damaged, although they were not completely popped. An additional cap which was damaged on my board was EC4.

When I measured the voltages the middle D +5V was reading about 4,6V. I did not expect a problem until I read the statement above on page 21 stating it should not be low by more than 0,1V. My A+14 and A-14 voltages also read about +/-17 to +/-18V.

I replaced all three caps: EC4, EC19 and EC20 with 25V caps instead of 16V caps. The voltage for D +5V now read exactly 5,01V! The A+/-14 read +/-16V (some improvement).

My unit is operating fine after replacing these 3 caps! I suspect that the damage to the caps could have been spikes on the AC suppy some stage, maybe due to lightning. Pretty amazing that only the power supply have damage and not the main pcb.

May 06, 2008 | Harman Kardon DVD-22 DVD Player

1 Answer

Not recognizing DVD player


i would say for some reason your dvd player is not compatible from now on with that brand of blank dvd!


get the firmware update from the brand website all you do is download the file burnit on a cd and put it in the dvd player should fix most and eventual problems

Jan 14, 2008 | Panasonic DMR-EH75VS DVD Recorder/VCR/HDD...

1 Answer

Unit is dead


all you have to do is to check the charging pin,charging terminal,and charging circuit.check all fusibul resistors!!! around the said section.

Feb 07, 2007 | Polaroid PDV-0701A Portable DVD Player

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