I just repaired a Compaq 15" LCD screen Model FP15 Model Number PE1233 Product Name P9618C Manufactured in October 2003; it is similar to HP1502. This LCD monitor has 2 boards, one 'power-backlight board' reference 715L1034-1 and one 'processor board'. The 'power board' 715L1034-1 was not working properly. Main issue with the board were 7 HERMEI capacitors that had 'bulged on top and blew their gaskets at the bottom", out of the 10 capacitors on the board. I am surprised that Compaq/HP used in October 2003 caps that were questionable since 2000.
I replaced these seven capacitors including 5 rated 470micF/16V [C926-924-929-930-930] and 2 rated 1000micF/16V [C922 & C925]. These HERMEI's are either purple or black [*C stands for degrees C]:
- purple 470micF/16V marked LT 105*C 0326, diameter: 8.2mm & height: 12mm
- black 1000micF/16V marked LE 105*C 0331, diameter: 10.1mm & height: 15mm.
Due to these faulty caps, Zener diode ZD904 [7.5V, 150mW] had overheated and left a visible burned spot on the board, but it was still working. This ZD904 can be tested in circuit by connecting +12V through a serie resistor to the Zener and measuring the voltage across the Zener; should be 0.7V one way and 7.5V the other.
After re-capping, the LCD monitor is now working.
By the way, a decent 'Service Manual' of the power board can be found at http://www.eserviceinfo.com/index.ph...ing=vf15++fp15 but the component reference number have changed by 100 e.g. component C922 on the board will be C822 in the service manual. Hope this helps. Vince -Berkeley-
I enclose a photograph of some of the 7 faulty caps. Good photographs of the 'power board' 715L1034-1A and another example of 'bulged capacitors' can be found in the 'allinbox' forum at http://forum.allinbox.com/aspectgee...ujet_8417_1.htm
I believe that this "power board 715L1034-1" is used by a number of LCD monitors built circa October 2003 with potentially faulty HERMEI caps:
- HP1502
- Compaq FP15 & FP5315
- Iyama PLE383
Vince
I replaced these seven capacitors including 5 rated 470micF/16V [C926-924-929-930-930] and 2 rated 1000micF/16V [C922 & C925]. These HERMEI's are either purple or black [*C stands for degrees C]:
- purple 470micF/16V marked LT 105*C 0326, diameter: 8.2mm & height: 12mm
- black 1000micF/16V marked LE 105*C 0331, diameter: 10.1mm & height: 15mm.
Due to these faulty caps, Zener diode ZD904 [7.5V, 150mW] had overheated and left a visible burned spot on the board, but it was still working. This ZD904 can be tested in circuit by connecting +12V through a serie resistor to the Zener and measuring the voltage across the Zener; should be 0.7V one way and 7.5V the other.
After re-capping, the LCD monitor is now working.
By the way, a decent 'Service Manual' of the power board can be found at http://www.eserviceinfo.com/index.ph...ing=vf15++fp15 but the component reference number have changed by 100 e.g. component C922 on the board will be C822 in the service manual. Hope this helps. Vince -Berkeley-
I enclose a photograph of some of the 7 faulty caps. Good photographs of the 'power board' 715L1034-1A and another example of 'bulged capacitors' can be found in the 'allinbox' forum at http://forum.allinbox.com/aspectgee...ujet_8417_1.htm
I believe that this "power board 715L1034-1" is used by a number of LCD monitors built circa October 2003 with potentially faulty HERMEI caps:
- HP1502
- Compaq FP15 & FP5315
- Iyama PLE383
Vince
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