Compaq/HP FP15 15" LCD: 7 'bulged' HERMEI caps

[vince88]

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 has 2 boards, one 'power-backlight board' reference 715L1034-1 and one 'processor board'. This 715L1034-1 seems to be used by quite a few other lCD e.g. Ilyama, etc.
The 'power board' 715L1034-1 was not working. Main issue with the 'power board' were 7 HERMEI capacitors that had "bulged at the top and popped the rubber seal at the bottom", out of a total of 10 HERMEI capacitors on the board. Shame on you Compaq/HP for using in October 2003 known defective caps :-( .
I replaced these seven capacitors including 5 rated 470micF/16V [C926, C924, C929, C930, C930] and 2 rated 1000micF/16V [C922 & C925]. Due to these faulty caps, Zener diode ZD904 [7.5V, 150mW] had overheated but was still working; 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. LCD 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

[kc8adu]

Re: Compaq/HP FP15 15" LCD: 7 'bulged' HERMEI caps

they used those gay purple hermei crapcaps in most of those.

[vince88]

Re: Compaq/HP FP15 15" LCD: 7 'bulged' HERMEI caps

The faulty HEMEI'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.
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/aspectgeek...jet_8417_1.htm

Vince

[vince88]

Re: Compaq/HP FP15 15" LCD: 7 'bulged' HERMEI caps

Here is a list of some of the LCD monitors that use this "power board 715L1034-1" circa October 2003 with potentially faulty HERMEI caps:
- HP1502
- Compaq FP15 & FP5315
- Iyama PLE383
Vince

[vince88]

Re: Compaq/HP FP15 15" LCD: 7 'bulged' HERMEI caps

The same "power board 715L1034-1" is also used in BenQ FP15 and what seems to be a clone sold as Dell 15". I wonder how many LCD monitors use this 'power/backlight' board with potentially faulty HERMEI's ?
Vince

[Spacedye69]

Re: Compaq/HP FP15 15" LCD: 7 'bulged' HERMEI caps

Yep. Exact same board as a Dell 15" I repaired.

[gurdog]

Re: Compaq/HP FP15 15" LCD: 7 'bulged' HERMEI caps

Were would I go to order replacement caps for this?